GU18 postcode district

Postcodes and sectors

145 of the district's 238 postcodes are live in the ONS Postcode Directory of August 2026. A postcode directory says whether a code is in use, never who is there. The live postcodes centre on 51.34847, -0.66998, which locates the district, not a building.

Companies registered in GU18

Companies House lists 374 companies with a registered office in GU18; none of them at an address shared by 25 or more companies (1 October 2026 snapshot). 25 is the count at which the address lookup reports a company cluster.

Places OS Open Names lists for GU18

• Surrey
• South East
• Surrey Heath
• Lightwater
• Woking

Roads filed under GU18

Named roads first, then numbered ones. A road is filed under one district even where it runs through several, so a street missing here may be listed under a neighbouring district — which is why the address lookup never calls a British street absent. Great Britain has no open register of buildings, so a listed road never means a building on it exists.

• All Saints Road
• Alsford Close
• Ambleside Road
• Aplin Way
• Badger Drive
• Barnett Lane
• Birch Tree View
• Birchwood Drive
• Blackstroud Lane East
• Blackstroud Lane West
• Blackthorn Drive
• Bluebell Rise
• Briar Avenue
• Broadway Road
• Broom Field
• Burdock Close
• Burnt Pollard Lane
• Catena Rise
• Christie Close
• Clearsprings
• Colville Gardens
• Coniston Court
• Copthorne Drive
• Corbett Drive
• Coyne Close
• Cranwell Grove
• Curley Hill Road
• Deer Leap
• Denly Way
• Derwent Road
• Falcon Close
• Fox Covert
• Gale Drive
• Glebe Close
• Gorse Bank
• Grasmere Road
• Guildford Road
• Hammond Way
• Heronscourt
• High View Road
• Hook Mill Lane
• Ivy Drive
• Junction Road
• Kenworth Grove
• Keswick Drive
• Lightwater Meadow
• Lightwater Road
• Ling Drive
• Lovells Close
• Lowfield Close
• Macdonald Road
• Mallards Way
• Maple Drive
• Marshwood Road
• Meadowbank Road
• Michelet Close
• Miles Place
• Montague Close
• Mount Pleasant Close
• Myrtle Close

Check an address in GU18

Check an address in GU18

The same road list through the API, from the outward code alone:

curl "https://spaw.co/api/v1/address/streets?country=GB&postal_code=GU18" \
  -H "Authorization: Bearer $SPAW_KEY"

Common questions about GU18

What does a GU18 postcode tell you?

That the address lies in the GU18 district of the GU (Guildford) postcode area, and the place OS Open Names most often lists first for its postcodes is Lightwater. The district alone does not place a street: the inward half of the full postcode narrows the address to one of the district's 145 live postcodes.

Where the counts come from

• ons-postcode-directory · version 2026-08 · Contains ONS, OS and Royal Mail data © Crown copyright and database right 2026, Open Government Licence v3.0. Northern Ireland postcodes are excluded: their reuse needs a Land & Property Services licence.
• os-open-names · version 2026-11-01 · Contains OS data © Crown copyright and database right 2026, Open Government Licence v3.0.
• uk-companies-house · version 2026-10-01 · Companies House free company data product, Open Government Licence v3.0

What each figure means, and what a district page never says, is set out in Reading a British postcode district page; the glossary defines a postcode district, a postcode area, a postcode directory and a street register.

Data synced on 2026-11-01: the newest version among the datasets listed above.

Districts nearest GU18

• GU192.0 km
• GU202.3 km
• GU243.5 km
• GU154.9 km
• GU165.8 km
• SL56.4 km
• GU217.0 km
• GU478.5 km
• RG128.5 km
• GU178.5 km
• GU148.9 km
• GU259.0 km
• Every district
• How a British address is written
• Check any address

distance between the districts' centroids