N12 postcode district

Postcodes and sectors

698 of the district's 1,308 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 51.61490, -0.17762, which locates the district, not a building.

Companies registered in N12

Companies House lists 7,621 companies with a registered office in N12; 4,367 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 N12

• Barnet
• Greater London
• London
• Finchley
• Friern Barnet

Roads filed under N12

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.

• Addington Drive
• Agnesfield Close
• Albert Street
• Alexandra Grove
• Anastasia Mews
• Argyle Road
• Arlington
• Ashbourne Close
• Ashurst Road
• Avenue Road
• Avondale Avenue
• Beechvale Close
• Birkbeck Road
• Bobby Moore Way
• Bow Lane
• Boxworth Close
• Bramber Road
• Britannia Road
• Brompton Mews
• Brook Meadow
• Budd Close
• Burnbrae Close
• Buxted Road
• Cardrew Avenue
• Cardrew Close
• Castle Mews
• Castle Road
• Chanctonbury Way
• Chaplin Square
• Chiddingfold
• Chislehurst Avenue
• Christchurch Avenue
• Churchfield Avenue
• Churchfield Way
• Church Path
• Cissbury Ring North
• Cissbury Ring South
• Claire Court
• Clements Close
• Cliveden Close
• Coleridge Road
• Colman Court
• Coppetts Close
• Copwood Close
• Cottonham Close
• Court House Road
• Crescent Way
• Croft Mews
• Crossway
• Crowder Close
• Dale Grove
• Derby Avenue
• Dorie Mews
• Eton Avenue
• Fairfield Close
• Fallow Court Avenue
• Fallowfields Drive
• Fenstanton Avenue
• Ferncroft Avenue
• Finchley Park

Check an address in N12

Check an address in N12

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

curl "https://spaw.co/api/v1/address/streets?country=GB&postal_code=N12" \
  -H "Authorization: Bearer $SPAW_KEY"

Common questions about N12

What does an N12 postcode tell you?

That the address lies in the N12 district of the N (North London) postcode area, and the place OS Open Names most often lists first for its postcodes is Finchley. The district alone does not place a street: the inward half of the full postcode narrows the address to one of the district's 698 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 N12

• N201.6 km
• N32.0 km
• N112.7 km
• N22.8 km
• N103.2 km
• NW73.9 km
• N143.9 km
• EN44.0 km
• EN54.2 km
• NW114.3 km
• NW44.4 km
• N225.0 km
• Every district
• How a British address is written
• Check any address

distance between the districts' centroids