Map Skills: Locating and Identifying UK Features

Two maps, two different jobs

An outline UK map helps you locate large features, such as mountain ranges, lowland basins and rivers. An Ordnance Survey (OS) map shows a smaller area in much greater detail, allowing you to recognise both natural features and the features people have created.

The connection between them is relief: the height and shape of the land. A national map helps you place an upland region within the UK; a detailed map helps you investigate the landscape within that region.

Locating uplands on an outline UK map

The UK's uplands are concentrated in the north and west, particularly in Scotland, Wales and northern England. This is a broad pattern, not a rule that every place in the north and west is mountainous.

Start by identifying the countries and the outline of the coast. Then place the main upland regions relative to these larger reference points:

• Scotland: the Northwest Highlands in north-western Scotland; the Grampian Mountains, including the Cairngorms, in the Highlands; and the Southern Uplands across southern Scotland, near the English border.
• England: the Lake District in Cumbria, in north-west England, and the Pennines forming a north–south spine through northern England. Dartmoor lies inland in Devon, while Exmoor is farther north, near the Bristol Channel coast.
• Wales: Snowdonia in north Wales, the Cambrian Mountains through central Wales and the Brecon Beacons farther south.
• Northern Ireland: the Mourne Mountains in the south-east and the Sperrin Mountains farther north and west.

Keep a mountain range separate from an individual summit. For example, Scafell Pike is a mountain within the Lake District, while Ben Nevis lies in the Grampian Mountains. Locating the region first gives you a framework for placing the peak.

For a concrete outline-map example, locate northern England between Scotland and the Midlands. Place the Pennines as an elongated belt running north–south, then place the Lake District to their west, nearer the Irish Sea. This describes their relative positions rather than treating both as dots at the same location.

Locating lowlands and basins

Lowlands are concentrated in central, southern and eastern England. Important examples include the Midlands, the Vale of York, the London Basin, and the lowlands around the Wash in Lincolnshire and East Anglia. The Fens form a particularly low-lying area of eastern England.

Build a connected picture rather than memorising an isolated list. Place the Vale of York east of the Pennines, associate the Fens with the land inland from the Wash, and place the London Basin in south-east England around London and the Thames. A basin label identifies a region rather than a single town.

There are also lowlands outside England. Scotland's Central Belt lies between the Highlands and the Southern Uplands, and Northern Ireland has central lowlands around Lough Neagh.

The broad contrast is therefore between predominantly northern and western uplands and predominantly central, southern and eastern lowlands. Local exceptions matter: Dartmoor and Exmoor are uplands in southern Britain.

Tracing major rivers towards the coast

Rivers connect inland areas with the coast, so their sources, broad courses and mouths provide useful location anchors:

• Thames: begins in the Cotswolds and flows broadly east through southern England, passing through London before reaching the North Sea through the Thames estuary.
• Severn: begins on Plynlimon in central Wales, flows east into England and then turns south towards the Severn estuary and Bristol Channel.
• Tay: flows broadly east through central Scotland towards the North Sea.
• Clyde: flows west through Scotland's Central Belt towards the Firth of Clyde.
• Bann: flows north from Lough Neagh through Northern Ireland towards the Atlantic coast.

For example, to place the Severn on an outline map, first locate central Wales and the Bristol Channel. Sketch its broad course east into England and then south towards the estuary. A straight line directly south from its source would miss its important eastward section.

A river line represents a route through the landscape, not one point. Useful settlement associations include Liverpool on the Mersey and Bristol on the River Avon, near the Severn estuary, but locating a settlement alone does not locate the river's whole course.

What the two OS scales mean

You need to recognise features on both 1:25,000 OS Explorer and 1:50,000 OS Landranger maps. The ratio compares map distance with ground distance in the same units.

At 1:25,000, 1 cm represents 25,000 cm, or 250 m, on the ground. At 1:50,000, 1 cm represents 50,000 cm, or 500 m.

The 1:25,000 map is the larger-scale map: the same ground distance occupies twice as much space on the page. This gives more room to show local detail. Scale is not height, and it does not tell you whether the landscape is upland or lowland.

Reading height and slope

A contour joins places at the same height above sea level. Its numerical label gives that height in metres. A spot height gives the height of one particular point rather than a whole line.

Contour spacing helps you read slope. Closely spaced contours mean that height changes over a short horizontal distance, indicating a steep slope. Widely spaced contours indicate a gentler slope. Closed contours with heights increasing towards the centre indicate a hill.

On 1:50,000 OS mapping, ordinary land contours are generally at 10 m intervals, with thicker contours at 50 m intervals. In very steep terrain, some thinner lines may be omitted because they would be too crowded. Always establish the interval from the map rather than assuming every visible neighbouring line represents the same height change.

The following constructed sketch demonstrates the reasoning. Its simplified key is for this illustration, not a reproduction of an OS symbol key.

The contours rise from 100 m to 120 m towards the hill's centre, while the spot height marks a point at 127 m. The more closely packed contours on the eastern side indicate a steeper slope than on the western side. The river is a physical feature; the road and buildings are human features. Their positions show a settlement beside a river at the foot of the hill.

Transfer this method to an actual OS extract by checking its own key and contour interval first. The sketch demonstrates how to combine evidence; it does not show a real surveyed location or provide practice with the full range of OS symbols.

Recognising physical and human features

A physical feature belongs to the natural environment: a river, hill, valley, lake or coastline. A human feature results from people's activity: a road, settlement, field boundary or drainage ditch. Use the map key to establish what a mark represents before classifying it.

OS keys identify features including roads, railways, buildings, vegetation and natural rock features such as cliffs, outcrops and scree. Explorer and Landranger maps include some different symbols, so the key belonging to the extract is your reference.

Some features need careful interpretation. Woodland consists of living trees, but people may have planted and managed it. Woodland alone does not establish its origin or purpose. Similarly, drainage ditches are human features even though they carry water.

Building a landscape description from evidence

Read an OS map in a sequence: identify the feature using the key, locate it, then describe its relationship to other features.

Combine evidence rather than listing unrelated symbols. High contour values and closely spaced lines can support a description of steep upland terrain. Buildings beside a river, linked by roads, show how settlement and transport occupy that landscape. Drainage ditches provide evidence of human modification.

Keep observation and explanation separate. Buildings beside a river show a spatial relationship. Rivers can provide freshwater and transport advantages, but that general explanation does not prove the history of every settlement shown.

UK location anchors

• Uplands: mainly north and west — Highlands and Southern Uplands; Lake District and Pennines; Snowdonia, Cambrian Mountains and Brecon Beacons; Mournes and Sperrins.
• Exceptions to the broad pattern: Dartmoor and Exmoor in south-west England.
• Lowlands: Midlands, Vale of York east of the Pennines, Fens inland from the Wash, London Basin in the south-east; Scotland's Central Belt.
• Rivers: Thames east to the North Sea; Severn east from Wales then south to the Bristol Channel; Tay east, Clyde west; Bann north from Lough Neagh.

OS scales and relief

• 1:25,000 Explorer: 1 cm = 250 m; larger scale.
• 1:50,000 Landranger: 1 cm = 500 m.
• Close contours = steeper slope; wide spacing = gentler slope.
• Increasing heights inside closed contours = hill.
• Spot height = height of one point.

Recognise and interpret

• Physical: rivers, hills, valleys, lakes and coastlines.
• Human: roads, buildings, field boundaries and drainage ditches.
• Use the extract's key → locate → describe relationships.
• Combine symbols with height evidence; separate observation from explanation.