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Surrey

County of England

  • 48 min read
  • 13 chapters
Edge of the North Downs
Des Blenkinsopp · CC BY-SA 2.0

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The county has an area of 1,663 km2 (642 square miles) and had an estimated population of 1,248,649 in 2024. The north of the county, which includes the towns of Staines-upon-Thames and Epsom, is densely populated and forms part of the Greater London conurbation. A second conurbation along the western border of the county includes Camberley and Farnham and extends into Hampshire and Berkshire. Woking is located in the north-west, and Guildford in the centre-west. The south of the county is rural, and its largest settlements are Horley in the south-east and Godalming in the south-west. For local government purposes Surrey is a non-metropolitan county with eleven districts. The county historically included much of south-west Greater London but did not include what is now the borough of Spelthorne, which was part of Middlesex. It is one of the home counties.

The defining geographical feature of the county is the North Downs, a chalk escarpment which runs from the south-west to north-east and divides the densely populated north from the more rural south; it is pierced by the rivers Wey and Mole, both tributaries of the Thames. The north of the county is a lowland, part of the Thames basin. The south-east is part of the Weald, and the south-west contains the Surrey Hills and Thursley, Hankley and Frensham Commons, an extensive area of heath. The county has the densest woodland cover in England, at 22.4 per cent.

Geography

Surrey is divided in two by the chalk ridge of the North Downs, running east–west. The ridge is pierced by the rivers Wey and Mole, tributaries of the Thames, which formed the northern border of the county before modern redrawing of county boundaries, which has left part of its north bank within the county. To the north of the Downs the land is mostly flat, forming part of the basin of the Thames. The geology of this area is dominated by London Clay in the east, Bagshot Sands in the west and alluvial deposits along the rivers.

To the south of the Downs in the western part of the county are the sandstone Surrey Hills, while further east is the plain of the Low Weald, rising in the extreme southeast to the edge of the hills of the High Weald. The Downs and the area to the south form part of a concentric pattern of geological deposits which also extends across southern Kent and most of Sussex, predominantly composed of Wealden Clay, Lower Greensand and the chalk of the Downs.

Much of Surrey is in the Metropolitan Green Belt. It contains valued reserves of mature woodland (reflected in the official logo of Surrey County Council, a pair of interlocking oak leaves). Among its many notable beauty spots are Box Hill, Leith Hill, Frensham Ponds, Newlands Corner and Puttenham & Crooksbury Commons.

Surrey is the most wooded county in England, with 22.4% coverage compared to a national average of 11.8% and as such is one of the few counties not to recommend new woodlands in the subordinate planning authorities' plans. In 2020 the Surrey Heath district had the highest proportion of tree cover in England at 41%. Surrey also contains England's principal concentration of lowland heath, on sandy soils in the west of the county.

Agriculture not being intensive, there are many commons and access lands, together with an extensive network of footpaths and bridleways including the North Downs Way, a scenic long-distance path. Accordingly, Surrey provides many rural and semi-rural leisure activities, with a large horse population in modern terms.

The highest elevation in Surrey is Leith Hill near Dorking. It is 295 m (968 ft) above sea level and is the second highest point in southeastern England after Walbury Hill in West Berkshire which is 297 m (974 ft).

Surrey rivers

The longest river to enter Surrey is the Thames, which historically formed the boundary between the county and Middlesex. As a result of the 1965 boundary changes, many of the Surrey boroughs on the south bank of the river were transferred to Greater London, shortening the length associated with the county. The Thames now forms the Surrey–Berkshire border between Runnymede and Staines-upon-Thames, before flowing wholly within Surrey to Sunbury, from which point it marks the Surrey–Greater London border as far as Surbiton.

The River Wey is the longest tributary of the Thames above London. Other tributaries of the Thames with their courses partially in Surrey include the Mole, the Addlestone branch and Chertsey branch of the River Bourne (which merge shortly before joining the Thames), and the Hogsmill River, which drains Epsom and Ewell.

The upper reaches of the River Eden, a tributary of the Medway, are in Tandridge District, in east Surrey.

The River Colne and its anabranch, the Wraysbury River, make a brief appearance in the north of the county to join the Thames at Staines.

Climate

Like the rest of the British Isles, Surrey has a maritime climate with warm summers and cool winters. The Met Office weather station at Wisley, about 6.5 miles (10.5 km) to the north-east of Guildford, has recorded temperatures between 37.8 °C (100.0 °F) (August 2003) and −15.1 °C (4.8 °F) (January 1982). From 2006 until 2015, the Wisley weather station held the UK July record high of 36.5 °C (97.7 °F).

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