TN20 postcode district

Postcodes and sectors

175 of the district's 236 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 51.01676, 0.25031, which locates the district, not a building.

Companies registered in TN20

Companies House lists 239 companies with a registered office in TN20; 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 TN20

• Wealden
• East Sussex
• South East
• Mayfield
• Skippers Hill
• Five Ashes
• Wellbrook
• Coggins Mill
• Argos Hill
• Rusher's Cross
• Uckfield
• Butcher's Cross
• Woolbridge

Roads filed under TN20

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.

• Alexandra Road
• Argos Hill Road
• Ashley Gardens
• Bassetts Lane
• Berkley Road
• Brewers Grove
• Chapmans Mews
• Coggins Mill Lane
• Criers Lane
• Dennis Lane
• Dunstans Croft
• East Street
• Fir Toll Close
• Fir Toll Road
• Fletching Street
• Frog Hole Lane
• High Street
• Holly Beech Lane
• Horleigh Green Road
• Knowle Hill
• Knowle Park
• Lake Street
• Leeds Lane
• Little Trogers Lane
• Love Lane
• Loxfield Close
• Maycroft Place
• Mayfield Close
• Mayfield Road
• Mountreed
• Newick Lane
• North Street
• Old Lane
• Pennybridge Lane
• Piccadilly Lane
• Pipers Yard
• Queensmount
• Richmead Gardens
• Roselands Avenue
• Rotherfield Lane
• Rothermead
• Scotsford Hill
• Southmead Close
• South Street
• Spring Lane
• Star Lane
• Station Approach
• Station Road
• St Leonards Lane
• St Mary-in-the-Fields
• Stone Cross
• Stonehurst Lane
• Sunnybank Close
• The Avenue
• The Glade
• The Grove
• The Warren
• Tidebrook
• Tunbridge Wells Road
• Vale Road

Check an address in TN20

Check an address in TN20

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

curl "https://spaw.co/api/v1/address/streets?country=GB&postal_code=TN20" \
  -H "Authorization: Bearer $SPAW_KEY"

Common questions about TN20

What does a TN20 postcode tell you?

That the address lies in the TN20 district of the TN (Tonbridge) postcode area, and the place OS Open Names most often lists first for its postcodes is Mayfield. The district alone does not place a street: the inward half of the full postcode narrows the address to one of the district's 175 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 TN20

• TN66.5 km
• TN216.6 km
• TN59.3 km
• TN1911.0 km
• TN2211.1 km
• TN311.6 km
• TN113.2 km
• TN213.2 km
• TN713.6 km
• TN414.3 km
• BN2716.1 km
• RH1817.2 km
• Every district
• How a British address is written
• Check any address

distance between the districts' centroids