OS Land-Line.Plus®

OS LandLine.Plus has been withdrawn. All your digital holdings of Land-Line.Plus data should have been deleted by the 31st of July 2009.

This page provides an archive of all the information produced about the Land-Line product created by EDINA over the last 10 years. The information is here to provide a historical record of how the Land-Line data worked.


Overview



The Ordnance Survey offered two products in the Land-Line range: Land-Line and Land-Line.Plus. The only difference between the two products was that Land-Line.Plus contained additional features representing vegetation and land cover. Digimap provided access to the Land-Line.Plus product.

Land-Line.Plus was the definitive large-scale dataset from Ordnance Survey until 2001 when MasterMap was launched. The data was surveyed and digitised to a high degree of accuracy at three source scales:

  • Urban (1:1,250 scale) - major towns and cities
  • Rural (1:2,500 scale) - smaller towns, villages and developed rural areas
  • Moorland (1:10,000 scale) - mountain and moorland areas

A large sample image of Land-Line.Plus.

Only small amounts of England are covered by Moorland Land-Line.Plus; parts of each of Dartmoor, the Peak District, Lake District, Forest of Bowland, North Pennines, North Yorkshire Moors. In Wales, Moorland Land-Line.Plus covers much of Snowdonia, the Brecon Beacons and the spine of hills running between them. In Scotland, much more is covered by Moorland Land-Line.Plus including much of the Highlands and Islands, Shetland (but not much of Orkney) and the major blocks of lowland hills.

Land-Line.Plus contained accurately surveyed positions of the natural and man-made features of the topography, such as individual buildings, walls and fences, plus vegetation, landform and administrative information.

The data included outlines and divisions of buildings, land parcel boundaries, road kerbs, rivers and water features and feature names and was used to create Superplan plots needed for planning.


Uses



Land-Line.Plus digital map data can support software applications such as:

  • Digital mapping
  • Asset/Facilities Management
  • Geographical Information Systems

Accuracy and resolution



The accuracy figures depend on whether an area is classified as Urban, Rural or Mountain. The accuracy figures for each of these categories are:

  • Urban (1:1,250 scale) - 0.4m
  • Rural (1:2,500 scale) - 0.9 to 1.2m
  • Mountain (1:10,000 scale) - 3.5m

The specification of Land-Line.Plus® is essentially the same in each of the 3 categories. However, in each case there are minimum sizes for features which are included in the data. These minimum sizes differ for Urban, Rural and Moorland tiles. For example, small recesses in buildings are only depicted if their minimum dimension is 1m for Urban tiles, 2m for Rural tiles and 5m for Moorland tiles. Similarly, some small features are generalised and represented as a symbol, rather than at their true size. For example, both banks of a stream are shown, unless the stream is below a threshold width, when it is shown as a single line. This threshold is 1m for Urban tiles, 2m for Rural tiles and 5m for Moorland tiles.

The coordinate resolution of Land-Line.Plus data is 0.01m.


Up-to-dateness



Each tile in Land-Line.Plus is updated by Ordnance Survey and re-supplied to Digimap in accordance with their policy on revision and update. When using Land-Line.Plus data it is possible to determine the date when that tile of data was last updated by Ordnance Survey.

The date when the tile was last updated is stored in an 8 digit number, whose format is "yyyymmdd". That is to say the first 4 digits represent the year, the next 2 digits represent the month, and the final 2 digits represent the day. The date can be found in the Section Header of the data file which consists of a block of 6 lines near the beginning of the file, the first of which starts with 07 and each of the other of which starts with 00.

The date of last change appears at characters number 11 to 18 in the 5th line of the Section Header, and is known as the Digital Update Date. In some tiles this date contains 00000000: this indicates that the tile has not been updated since 1 June 1984.

It is important to note that the date which appears at characters 61 to 68 of the 2nd line of the Section Header, which Ordnance Survey document in their User Guide as the date when the tile was last amended, and is known as the Last Amended Date does not carry useful information for users, and should be ignored.

Please bear in mind that, in accordance with Ordnance Survey's policy on revision, the tile does not necessarily comprise a complete snapshot of the real world on the Digital Update Date.


Tile structure



Land-Line.Plus' contents are identical to the content of the traditional paper maps which were published at scales of 1:1,250 for Urban areas, 1:2,500 for Rural areas, and 1:10,000 for Moorland areas (sometimes called Mountain and Moorland). Although Land-Line.Plus is a data product, and not a paper product, its structure and content does reflect the same policies that the paper product did. The name of each tile is a Grid reference indicating its extent, and hence whether it is Urban, Rural or Moorland.

As was stated in the Ordnance Survey sub-licence agreement, it was not permitted for an institution to make printed or electronic copies of more than 10% of the whole of Land-Line.Plus for any purpose.

Available Tile Sizes for Land-Line.Plus
  Nominal scale Tile size Example Tile Name
Urban 1:1,250 500m * 500m SK 0472 SE
Rural 1:2,500 1km * 1km SK 0474
Moorland 1:10,000 5km * 5km (usually) SK 07 SW

In some cases the size and shape of a Moorland tile is smaller than 5km * 5km. See below for discussion.

Every location in Great Britain is mapped at only one of the Land-Line.Plus® scales, depending on whether Ordnance Survey define it as being Urban, Rural or Moorland. As a general guide:

  • Urban covers large towns and cities,
  • Rural covers small towns, villages and agricultural land, and
  • Moorland covers mountainous or moorland areas such as Exmoor, Dartmoor, the Peak District, the Lake District, and large areas of Scotland and Wales.

The boundaries between each of these categories are always tile edges, which results in small areas of each type of ground being categorised as another.

Finding the tile you are looking for

Say you are looking for Land-Line.Plus® data for a particular area, but do not know whether the Ordnance Survey have categorised the area as Urban, Rural or Moorland. From a map you can work out what the Urban or Rural tile name would be for your location. How do you work out the Moorland tile name for the same location?

Beginning with SK 0371 NE
From To Process Example
      SK 0371 NE
Urban Rural Remove quadrant letters from end of Urban tile name SK 0371
Rural Moorland Take 100km square name
Append 1st and 3rd digits
Append N if 4th digit is 5 or more
Append S if 4th digit is less than 5
Append W if 2nd digit is less than 5
Append E if 2nd digit is 5 or more
SK
SK 07

SK 07 S
SK 07 SW

There is a "Land-Line tile selector" on the Ordnance Survey web site which allows you to examine the Land-Line tiles in any locality in Great Britain.

Smaller Moorland tiles

Moorland tiles are normally 5km * 5km. However, in some cases, part of the area covered by a Moorland tile is covered by an Urban tile or by a Rural tile. In such a case, the resulting Moorland tile contains no data for the area covered by the Urban or Rural tile. As a result, the Moorland tile can be an irregular shape, or can even be made up of disjoint parts. The smallest area covered by a Moorland tile is 1km2 (e.g. NZ 70 NE, in North Yorkshire), although most such tiles contain much more data than this.

For example, in the area on the West side of Buxton, the Land-Line.Plus® tiles that exist are shown in this diagram:

Tile SK07SW showing extent of Moorland data for the West side of Buxton

Tile SK 07 SW is a Moorland tile, and contains data only for the shaded area in the above diagram.

The data for the other (unshaded) areas are contained in Urban (1:1,250) and Rural (1:2,500) tiles. These tiles have their own names, indicating their location and extent. The tile marked * is named SK 0074 and is a Rural Land-Line.Plus® tile covering 1km * 1km. The tile marked Y is named SK 0473 NW and is an Urban Land-Line.Plus® tile covering 500m * 500m.


Data Volume



The following table shows the size in megabytes of tiles of Land-Line.Plus®; in NTF format, for each of Urban, Rural and Moorland tiles. In each case 2 figures are given: the average size of a data tile and the maximum size of a data tile.

Land-Line.Plus® 229,448 tiles.
  Number of tiles in series Ground area covered per tile Source scale NTF (Mb)
Average Maximum
Urban 67,039 500 m x 500 m 1:1,250 0.22 1.51
Rural 158,434 1 km x 1 km 1:2,500 0.13 1.12
Moorland 3,975 5 km x 5 km 1:10,000 0.25 1.50

Height information



Land-Line.Plus includes limited information on height. These are represented as point features with explanatory text placed nearby. However, there is no explicit relationship in the data between the text and the height-related feature it refers to.

Heights are given in metres above mean sea level (or more precisely, above Ordnance Survey’s reference datum, which was mean sea level at Newlyn in Cornwall measured from 1 May 1915 to 30 April 1921).

  • Spot Heights — points whose height is shown by accompanying text to the nearest 10 centimetres. Spot heights tend to be at junctions, local high points and low points along roads.
  • Bench Marks — physical marks, the height of which is shown by accompanying text to the nearest centimetre. Their best known form is an arrow cut into masonry, often found on building corners and bridges. All current benchmarks (except those found on triangulation pillars) are shown. The height value given in the text refers to the height of the Bench Mark which may be up to 1m above the surrounding ground level.
  • Triangulation Pillars — these are physical marks often found on a hill or mountain top. Most triangulation pillars include a bench mark whose height is shown by accompanying text to the nearest centimetre.

Levels defined



  • Ground surface level - Land-Line.Plus shows physical features by their outline at ground surface level.
  • Overhead level - This comprises those features which are above ground surface level which are coded 0004 and 0043. Overhead detail is normally shown if it is of such size and character as to constitute a meaningful topographic feature.
  • Underground level - This comprises those features which are below those at ground surface level, which are coded 0033. Underground features are not normally shown, except for some communications in tunnels or subways and specified features within complex multilevel structures.

Features



Features included in the Land-Line.Plus specification:

  • Buildings (with selected building names and house numbers)
  • Roads (with road names and/or Department of Transport road numbers)
  • Fences, walls, hedges and banks
  • Rivers, streams, drains, canals, lakes, reservoirs and ponds
  • High and Low Water marks
  • Railways (standard and narrow gauge)
  • Tunnel alignments
  • Pylons, overhead structures and cables
  • Triangulation points, Bench marks and Spot heights
  • Place names
  • Administrative and Constituency Boundaries
  • Extent of vegetated areas
  • Vegetation type such as reeds or scrub
  • Cliffs and man-made slopes
  • Bare ground characteristics such as scree or rock

Buildings

  • Internal divisions within a building are generally not shown. Such divisions are shown where the internal division can be surveyed without entering the building. Where buildings have been extended it is possible that the original exterior wall may still be marked as an internal division, although this is the exception rather than the rule.
  • Internal divisions between buildings may be coded as Building outlines (code 0001) or general line detail (code 0030). For example, within a single terrace of houses some of the divisions between individual dwellings may be shown as code 0001 and some as code 0030. A building divided into two semi-detached dwellings will be drawn as two separate polygons, with the internal wall coded as either 0001 or 0030. The two Feature Codes are interchangeable in this context, and nothing can be inferred from the use of one of the two codes instead of the other.
  • Numbering. Within a street, sufficient buildings are numbered to allow the number of every building to be correctly deduced. The decision of which buildings to number is made for this purpose alone. Common patterns of numbering are for even numbers and odd numbers to be on opposite sides of the street, or for houses along one side of the street to be consecutively numbered. Irregularities in numbering, such as the existence of 17A and 17B between numbers 17 and 19, or the absence of a house numbered 13, are indicated. The orientation of a building number indicates which road a building belongs to. The base of the number will point towards the road in which the building is numbered. Plot numbers or temporary numbers on land which is under development are not recorded.
  • Roofed area seed points (Feature Code 0321 and 0323). Each area which is roofed contains a "seed point". The function of the seed point can be understood by imagining the roofed area symbol being started at the seed point and allowed to spread out in all directions and stopped when it first reached a line.

Area features

Area features in Land-Line.Plus are represented by seed points. The seed point carries a Feature Code describing the area feature type. The extent of the area feature is the smallest area surrounding the seed point enclosed by line features. Area features in Land-Line.Plus are used for roofed areas (codes 0321 and 0323), areas of vegetation and ground cover (codes 0377 to 0392 and code 1210), cliffs and slopes (codes 0396 and 0397) and areas of water (code 0400).

Administrative boundaries

Aspects of administrative boundaries which are shown in Land-Line.Plus are:

  • The alignment
  • A boundary's relationship to other topographic features (this is known as its "mereing")
  • Descriptions of the boundary type, where necessary for clarification

The following boundaries are shown in Land-Line.Plus:

  • Parliamentary boundaries (Feature Code 0079), which is used to depict
    • European electoral region
    • County constituency
    • Borough constituency in England and Wales
    • Burgh constituency in Scotland
    • National assembly constituency in Wales
    • National assembly electoral Region in Scotland
  • Local government boundaries
    In England:
    • County (Feature Code 0009)
    • County of the City of London, district, London borough, unitary authority and metropolitan district (Feature Code 0008)
    • Civil parish and the Inner and Middle Temples (Feature Code 0007)
    • Electoral division (Feature Code 0010)
    • Ward (Feature Code 0010)
    In Wales:
    • Unitary authority (Feature Code 0008)
    • Community (Feature Code 0007)
    • Electoral division (Feature Code 0010)
    In Scotland:
    • Unitary authority (Feature Code 0008)
    • Electoral division (Feature Code 0010)
    • Ward (Feature Code 0010)

Boundary alignments have a defined relationship with the topographic features in their locality. This relationship is known as boundary mereing and is recorded as a textual description. The description of the type of administrative area that a boundary refers to is also usually abbreviated within Land-Line.Plus. A list of the more common boundary abbreviations which are used in Land-Line.Plus for the descriptions of administrative areas, and for the mereing of those boundaries can be found in the Abbreviations section.

Feature precedence for coincident features

Any line carries only one Feature Code. Therefore, where a line represents more than one physical feature, the following hierarchy is used to determine the appropriate Feature Code for that line. The Feature Code that is highest in this hierarchy is used.

  1. Mean High Water (Feature Code 0071)
  2. Building (Feature Codes 0001, 0004)
  3. Water detail (Feature Code 0059)
  4. Road detail (Feature Code 0021)
  5. Other detail
  6. Mean Low Water (Feature Code 0072)

An example is the Houses of Parliament in London. These are situated on the bank of the River Thames. At this point the river is tidal. The side of the building which is at the water's edge is marked by the mean high water mark rather than the building outline.

Feature codes

Each point or line object included in Land-Line.Plus is allocated a Feature Code to indicate the feature in the real world that it represents. Text found on a Land-Line.Plus map is also allocated a Feature Code, depending on the type of feature it refers to. Within the data, there is no explicit relationship between text and the point or line features to which they refer in the real world.

The table below summarises the Feature Codes that are used in Land-Line.Plus. For each Feature Code the following information is given:

  • 4 character numeric code
  • description
  • examples of real world features represented by that Feature Code

Feature codes, or layer names, in Land-Line.Plus DXF data are prefixed by the characters "G801". For more information on DXF data download the user guide.

Feature code Description Type Attributes Examples
0001 Building outline Line   Outline of buildings, some internal building divisions.
0004 Overhead building outline Line   Outline of open sided buildings, canopies; some internal building divisions which cannot be surveyed from the outside.
0007 Civil parish or community boundary Line    
0008 District, London borough or Unitary authority boundary Line    
0009 County boundary Line    
0010 Ward or electoral division boundary Line    
0011 Boundary post or stone Point    
0013 Boundary half mereing symbol Point OR  
0014 Narrow gauge railway Line   Railway and tramway lines narrower than standard gauge.
0015 Standard gauge railway Line   Each rail is shown by a separate line.
0021 Road (public) edge of metalling Line   Kerb line or verge of public road surface.
0025 Triangulation point Point    
0026 Bench mark Point OR  
0027 Spot height Point    
0030 General line / minor building detail Line   Hedge, wall, fence, small buildings.
0032 General ground level or minor overhead detail Line   Edge of paved area, unmade path, cycle track, level crossing.
0033 Underground detail / course of antiquity Line   Tunnel alignment, underground railway.
0035 Vegetation / Landform limit (minor) Line   Changes of classification within vegetated areas.
0036 Vegetation / Landform limit (major) Line   Pit, quarry, opencast workings, spoil or slag heap.
0043 Overhead detail Line   Chairlift, electricity transmission lines.
0049 Pylon Point DT, OR Electricity pylon, radio mast, lighting tower
0052 Minor detail Line   Archway symbol, buffer, switch (railway)
0057 Point feature Point   Post box, monument, spring, post
0059 Water detail Line   River, stream, basin, dock, lock
0069 Flow arrow Point OR  
0071 Mean high water Line   In Scotland, mean high water springs.
0072 Mean low water Line   In Scotland, mean low water springs.
0079 Parliamentary or Euro constituency boundary Line   Constituency boundaries for Regional, National and European parliaments.
0098 Road centreline Line    
0321 Roofed building indicator (seed) Point    
0323 Glasshouse indicator (seed) Point    
0372 Positioned coniferous tree Point   Individual named tree of historical interest
0373 Positioned non-coniferous tree Point   Individual named tree of historical interest
0374 Top of slope Line    
0375 Top of cliff Line    
0376 Bottom of slope or cliff Line    
0377 Boulders (seed) Point    
0378 Scattered boulders (seed) Point    
0379 Coniferous trees (seed) Point    
0380 Coniferous trees (scattered) (seed) Point    
0381 Coppice, osiers (seed) Point    
0382 Marsh, saltmarsh, reeds (seed) Point    
0384 Non-coniferous trees (seed) Point    
0385 Scattered non-coniferous trees (seed) Point    
0386 Orchard (seed) Point    
0387 Heath (seed) Point    
0388 Rock (seed) Point    
0389 Scattered rock (seed) Point    
0390 Rough grassland (seed) Point    
0392 Scrub (seed) Point    
0395 Upper level of through public communication (seed) Point    
0396 Cliff (seed) Point    
0397 Slope (seed) Point    
0400 Water(seed) Point    
1210 Scree(seed) Point    
1211 Positioned boulder Point    
1212 Ridge / rock line Line    

There are also six Feature Codes for text:

Text Feature Code Feature Code Description
1000 Road name or number
1005 Administrative boundary text
1006 House number or building name
1009 Miscellaneous text
1010 Water text
1013 Land parcel number

Textual information is supplied with a code identifying typeface, an orientation and a height in millimetres. It also has a text location code to indicate how it should be positioned relative to its coordinates.

The attribute codes used above are detailed in the table below.

Code Description Notes
DT Distance Distance from centre of pylon (Feature Code 0049) to edge of symbol, measured in metres on the ground.
OR Orientation Orientation of the symbol for a point feature from grid east, anticlockwise in tenths of a degree.

Abbreviations



Real World Features

The descriptions of real world features are sometimes abbreviated for cartographic clarity. The following table gives a list of abbreviations used within text in Land-Line.Plus, together with their full form and the feature code for that category of text.

Abbreviation Real world feature NTF feature code
ALB Air Light Beacon 1009
Allot Gdns Allotment Gardens 1009
Amb Sta Ambulance Station 1006
AVE or AV AVENUE (named) 1000
BH Beer House 1006
Bk Bank (building) 1006
Bks Barracks 1006
Bldg Building (named) 1006
BM Bench Mark 1009
Bol Bollard 1009
Br Bridge (named) 1009
Bty Battery 1009
C Crane 1009
Car Pk Car Park 1009
Cemy Cemetery 1009
CG Sta Coastguard Station 1006
CH Club House (Golf) 1006
Chy Chimney 1009
Cin Cinema 1006
Cis Cistern 1009
CL CLOSE (road name) 1000
Cn Capstan 1009
CNR CORNER (road name) 1000
Coll College 1006
Colly Colliery 1009
Conv Home Convalescent Home 1006
Corpn Yd Corporation Yard 1009
Cott Cottage (named) 1006
Crem Crematorium 1006
CR or CRES CRESCENT (road name) 1000
CT COURT (road name) 1000
Ct Ho Court House 1006
Ct of Law Court of Law 1006
Cvt Convent 1006
D Fn Drinking Fountain 1009
dis disused 1009
Dismtd Rly Dismantled Railway 1009
Dk Dock 1009
DR DRIVE (road name) 1000
DW Double wall 1009
Dry Dk Dry Dock 1009
El Gen Sta Electricity Generating Station 1006
El P Electricity Pole, Pillar 1009
El Sub Sta Electricity Sub-Station 1009
ETL Electricity Transmission Line 1009
F Sta Fire Station 1006
FA Fire Alarm 1009
Fall Waterfall 1010
FB Filter Bed
Foot Bridge
1009
FBM Fundamental Bench Mark 1009
Ferry F Ferry - Foot 1009
Ferry V Ferry - Vehicular 1009
Fl Sk Flare Stack 1009
Fm Farm (named) 1006
Fn Fountain 1009
FS Flagstaff 1009
G Yd Graveyard 1009
Gas Gov Gas Governor 1009
GDNS GARDENS (road name) 1000
Govt Offices Government Offices 1006
GP Guide Post (finger post) 1009
GR GROVE (road name) 1000
Gr Grove (wood name) 1009
GS Guide Stones 1009
GVC Gas Valve Compound 1009
Hd Head (named) 1009
Ho House (named) 1006
Hospl Hospital 1006
I Island, Isle (named) 1009
Infmy Infirmary 1006
Inst Institute 1006
Instn Institution 1006
IRB Sta Inshore Rescue Boat Station 1006
Junc Junction (rail, named) 1009
JUNC JUNCTION (road name) 1000
Km P Kilometre Post 1009
L Lake (named) 1010
L Lock 1009
L Ho Lighthouse 1006
L Twr Lighting Tower 1009
LA LANE (road name) 1000
LB Letter Box 1009
LB Ho Lifeboat House 1006
LB Sta Lifeboat Station 1006
LC Level Crossing 1009
Leisure Gdns Leisure Gardens 1009
LG Loading Gauge 1009
Liby Library (public) 1006
LK Lime Kiln 1009
Lo Lodge 1006
Meml Memorial 1009
Met Sta Meteorological Station 1006
MH& MLW Mean High & Mean Low Water 1010
MHW Mean High Water 1010
MHWS Mean High Water Springs 1010
Misn Mission 1006
Mkt Market 1009
MLW Mean Low Water 1010
MLWS Mean Low Water Springs 1010
Mon Monument 1009
Mort Mortuary 1006
MP Mile Post
Mooring Post
1009
Mr Manor 1006
MS Mile Stone 1009
Mt Mountain (named) 1009
Multi Car Pk Multistorey Car Park 1009
Mus Museum 1006
NTL Normal Tidal Limit 1010
Obsy Observatory 1006
P Pillar
Post (preventing vehicular access)
Pylon
1009
Pal Palace 1006
Pav Pavilion 1006
PC Public Convenience 1006
PCB Police Call Box 1009
PH Public House 1006
PL PLACE (road name) 1000
Plantn Plantation (named) 1009
PO Post Office 1006
Pol Ho Police House 1006
Pol Sta Police Station 1006
Pp Pump 1009
Pp Ho Pump House 1006
Ppg Sta Pumping Station 1006
Presby Presbytery 1006
Pt Point (named) 1009
PW Place of Worship: e.g. Chapel, Church, Ebenezer,
Friends Meeting House, Gospel Hall, Kingdom Hall,
Mission Church, Mosque, Oratory, Salvation Army Citadel,
Synagogue, Tabernacle, Temple
1006
R River (named) 1010
Range Rifle Range 1009
RD ROAD (named) 1000
Rec Rectory 1006
Recn Cen Recreation Centre 1006
Recn Gd Recreation Ground 1009
Resr Reservoir 1010
RH Road House 1006
Roof Car Pk Roof Car Park 1009
S Stone 1009
S Br Signal Bridge 1009
S Gantry Signal Gantry 1009
S Sta Signal Station 1006
Sanatm Sanatorium 1006
SB Signal Box 1006
Sch School 1006
Sd Sound (named) 1010
SD Sundial 1009
Sewage Ppg Sta Sewage Pumping Station 1006
SL Signal Light 1009
SM Sloping masonry 1009
Smy Smithy (in rural areas) 1006
SP Signal Post 1009
Spr Spring 1010
SQ SQUARE (road name) 1000
ST STREET (road name) 1000
Sta Station (railway) 1006
TA Centre Territorial Army Centre 1006
TCB Telephone Call Box 1009
TCP Telephone Pillar or Post 1009
Tech Coll Technical College 1006
Tel Ex Telephone Exchange 1006
Tel P Telephone Pole 1009
Terr Terrace (houses) 1006
TERR TERRACE (road name) 1000
TH Town Hall 1006
Tk Tank
Track
1009
Toll Toll Bridge
Toll Gate
1009
Trav C Travelling Crane 1009
TV Sta Television Station 1006
Twr Tower 1006
um un-made (path) 1009
Univ University 1006
V Ho Valve House 1006
Vic Vicarage 1006
W Well (non-antiquity) 1010
War Meml War Memorial 1009
WB Weighbridge 1009
Wd El Gen Wind Electricity Generator 1009
Wd Pp Wind Pump 1009
Wks Works 1009
WMP Warning and Monitoring Post 1009
Wr Pt Water Point (railways) 1009
Wr T Water Tap (public) 1009
Wr Tr Water Trough (public) 1009
Wr Twr Water Tower 1009
Wr Wks Water Works 1009
Y Youth Hostel 1006
Yd Yard (named) 1009

Administrative Areas

These abbreviations are used in Land-Line.Plus for the descriptions of administrative areas. European parliamentary constituency (Euro Const) boundaries are being progressively replaced by European electoral region (EER) boundaries during 1999/2000.

Abbreviation Title or description
Asly Const Welsh assembly constituency
Assembly ER Welsh assembly electoral region
B Md Boundary mound
B Mk Boundary mark
Bdy Boundary
Boro Const or BC Borough constituency
BP Boundary post or plate
BS Boundary stone
Burgh Const or BC Burgh constituency
C Community (Wales)
Co Const or CC County constituency
Co County (England)
CP Civil parish (England)
Det Detached
Dist District
ED Electoral division
EER European electoral region
Euro Const European parliamentary constituency
LB London borough
P Const Scottish parliamentary constituency
PER Scottish parliamentary electoral region
UA Unitary authority
Ward Ward

Boundary mereing abbreviations

These abbreviations are used in Land-Line.Plus for the mereing of administrative boundaries.

Abbreviation Object or Mereing
B Baulk, bank, base, basin, bridge, broad
C Cam, canal, causeway, centre of, channel, cliff,
conduit, cop, course of, covered, culvert, cut
D Dam, ditch, dock, double, down, drain
DD Double ditch or drain
DF Double fence
Def Defaced
E Edge of, eyot
F Face of, fence, fleet, foot, freeboard
Ft Feet
H Harbour, hedge
HW High water
Ins Inches
K Kerb
L Lade, lake, lead, loch, lockspit, lynchet
LW Low water
M Marsh, mere, moat
MHW Mean high water
MHWS Mean high water springs (Scotland only)
MLW Mean low water
MLWS Mean low water springs (Scotland only)
m Metres
O Old
P Passage, path, plate, pond, post
R Race, railway, ride, river, road, root of
RH Root of hedge
S Scar, sewer, side of, slope, sluice, stone, stream
T Top of
Tk Track
Und Undefined
W Wall, weir

The following are examples of how boundary mereing abbreviations are used in combination to described the mereing of a boundary.

Abbreviation Object or Mereing
CB Centre of bank, basin, baulk, broad, and so on
CR Centre of railway, river, road, and so on
COCS Centre of old course of stream
CCLW Centre of channel at low water

Mereing symbols are "lollipop" shaped symbols always found in pairs. They are used where the mereing of the boundary changes, for example where a boundary changes from running along the centre of a road to the face of a fence.

When two or more boundary features are coincident, a single line is shown using the Feature Code or layer of the most important boundary. A textual description is used for clarification. Where boundaries coincide with physical features, both are shown separately using their respective Feature Codes.

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160 Causewayside, Edinburgh
United Kingdom EH9 1PR

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