RH18 postcode district

Postcodes and sectors

141 of the district's 233 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 51.09294, 0.03580, which locates the district, not a building.

Companies registered in RH18

Companies House lists 682 companies with a registered office in RH18; 48 of them at addresses 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 RH18

• South East
• Wealden
• East Sussex
• Forest Row
• Wych Cross
• East Grinstead
• Mid Sussex
• West Sussex

Roads filed under RH18

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.

• Ashdown Close
• Ashdown Road
• Balfour Gardens
• Blacklands Crescent
• Blenheim Fields
• Brambletye Lane
• Broadstone
• Card Hill
• Chapel Lane
• Chequer Grange
• Colchester Vale
• Colemans Hatch Road
• Crown Wood
• Dale Road
• Deerhurst Park
• Evelyn Clark Square
• Forest Road
• Freshfield Bank
• Gage Ridge
• Gilham Lane
• Griffits Path
• Hartfield Road
• Hatch End
• Highfields
• Highgate Road
• Hillside
• Hindleap Lane
• Inkpen Lane
• Kidbrooke Rise
• Lewes Road
• Lines Close
• Lines Lane
• London Road
• Lower Road
• Medway Drive
• Michael Fields
• Newlands Place
• Park Crescent
• Park Road
• Post Horn Close
• Post Horn Lane
• Primrose Lane
• Priory Road
• Riverside
• Ryst Wood Road
• School Lane
• Shalesbrook Lane
• Spring Meadow
• Station Road
• Stonedene Close
• Stonepark Drive
• Swans Ghyll
• Tompsets Bank
• Tomtits Lane
• Upper Close
• Walhatch Close
• Wall Hill Road
• Waterworks Close
• Woodcote Road
• Wych Cross

Check an address in RH18

Check an address in RH18

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

curl "https://spaw.co/api/v1/address/streets?country=GB&postal_code=RH18" \
  -H "Authorization: Bearer $SPAW_KEY"

Common questions about RH18

What does an RH18 postcode tell you?

That the address lies in the RH18 district of the RH (Redhill) postcode area, and the place OS Open Names most often lists first for its postcodes is Forest Row. The district alone does not place a street: the inward half of the full postcode narrows the address to one of the district's 141 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 RH18

• TN74.6 km
• RH195.1 km
• RH79.9 km
• TN610.8 km
• TN811.7 km
• TN2213.1 km
• RH1713.4 km
• RH1013.6 km
• RH1613.8 km
• TN315.2 km
• TN416.4 km
• RH616.6 km
• Every district
• How a British address is written
• Check any address

distance between the districts' centroids