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Postcode guide · Cherwell · Bicester fringe

OX25 Postcode

The Bicester rural fringe — home to Graven Hill (UK's largest self-build site), Heyford Park (former RAF station turned village), and a cluster of villages with strong M40 access north and west of the town.

Graven Hill, Heyford Park
Key places
J9 / J10
M40
Heyford station
Rail
Cherwell
District

What OX25 covers

OX25 covers the rural fringe around Bicester — the villages and settlements to the north, west, and south of the town that have their own postcodes distinct from the OX26 core. Key locations include:

  • Graven Hill — the UK's largest self-build and custom-build development (~1,900 homes on former MoD land, south Bicester); OX25 2DR
  • Heyford Park — former RAF Upper Heyford; 1,200+ homes built, 9,000 more consented; direct rail to Oxford and London
  • Ambrosden — large village, MoD Arncott site nearby
  • Middleton Stoney — village on the A4095, close to M40 J9
  • Weston-on-the-Green — village with parachute centre, A34 access
  • Lower Heyford / Upper Heyford — Cherwell Valley villages, station

Notable developments

  • Graven Hill — self-build plots, custom homes, new builds (2–5 bed from £395k), and apartments on 188 hectares of former MoD land. 10-minute walk from Bicester Village station.
  • Heyford Park — large-scale conversion of RAF Upper Heyford; community school, sports facilities, and direct Chiltern rail services. 9,000 further homes consented.

Transport

  • Heyford station — Chiltern Railways; Oxford (20 min), London Marylebone (~80 min); served by the Cherwell Valley line
  • Bicester Village station — 10-min walk from Graven Hill; Chiltern to Oxford Parkway (15 min) and London Marylebone (56 min)
  • M40 J9 — approx. 3 miles from most OX25 locations; motorway access north and south
  • A34 — south to Oxford and Science Vale; connects to M40 at Peartree interchange

Who it suits

  • Self-build buyers — Graven Hill is the only site of its kind in the UK
  • RAF / MoD families — Ambrosden / Arncott proximity and familiarity with Heyford
  • Rural village buyers — OX25 villages offer genuine countryside character within easy reach of Bicester and Oxford
  • Buyers priced out of OX26 — similar rail access, often lower prices in the villages