1. BICESTER Built as a bomber station from 1924, the grass airfield survives with airfield defences, bomb stores, perimeter track and WWII hard standings.
2. BIGGIN HILL Britain’s most celebrated fighter station with a particularly fine officers’ mess from 1934.
3. CALSHOT Opened in 1913, Calshot is the best-preserved of a chain of contemporary seaplane bases with a surviving group of hangars of 1913- 18, now Grade II listed.
4. CATTERICK A Home Defence Station in 1914, now the best preserved fighter sector station in the north of England with a group of WWI hangars.
5. COSFORD Opened in 1938 as No.2 School of Technical Training.
6. CRANWELL The development of the Cadet College at Cranwell, begun in 1929, was a cornerstone of Britain’s independent airforce.
7. DEBDEN Battle of Britain fighter station, retains much of its 1930s character and largely intact flying field and perimeter.
8. DUXFORD Famous fighter station with the best-preserved technical fabric from a site up to November 1918, including paired hangars.
9. EAST KIRKBY Opened in 1943 in support of Bomber Command. The control tower is one of 162 built to this particular design.
10. ELVINGTON Halifax Bombers based here were heavily engaged in the Battle of the Ruhr in early 1943.
11. FILTON Hangars built between 1917 and 1918, now used by British Aerospace.
12. HALTON Centre for technical training for the Royal Flying Corps in 1917. Well-preserved buildings from the 1920s and 1930s.
13. HENLOW Five General Service Sheds are the most complete ensemble of hangars on any British site for the period up to 1923.
14. HULLAVINGTON Most of the original 1937 buildings have survived and the flying field remains.
15. KEMBLE 24 Aircraft Storage Unit sites planned and built by the Air Ministry between 1936 and 1940.
16. LARKHILL Aircraft sheds from 1910 are among the most historically significant structures - ranking with the remains of the Wright Brothers’ workshops and the 1910 Boeing workshop at Seattle.
17. LITTLE STAUGHTON Exceptionally well-preserved 1941 Control Tower.
18. LITTLE WALDEN Exceptionally complete WWII Control Tower.
19. LUDHAM 1941 Control Tower.
20. MANBY Technical and domestic buildings.
21. NETHERAVON Well-preserved barracks and mess buildings from 1913-14. Grass airfield intact.
22. NORTHOLT Officers’ Mess, four barracks blocks, two hangars, workshops and operations room from 1920s.
23. NORTH WEALD Fighter station in the Battle of Britain.
24. OLD SARUM Best-preserved flying field of WWI, bounded by one of the most complete suites of technical and hangar buildings of the period.
25. ROUGHAM Famous USAAF bomber base. Control Tower survives.
26. SCAMPTON Bomber Command’s most famous WWII base thanks to the Dambuster Raids.
27. SPITALGATE Opened as a training station in 1917, Spitalgate was one of the few retained for use by the RAF after 1919.
28. SWANTON MORLEY One of the best-preserved Art Deco Control Towers. The first combined British/American bombing raid was launched from here on 29 June 1942, with both Churchill and Eisenhower present.
29. UPAVON Founded in 1912 as the Royal Flying Corp’s Central Flying School. Several 1913/14 buildings survive.
30. UXBRIDGE The underground bunker of 1938 contains the Group Operations Room from where the vital 11 Fighter Group was commanded during the Battle of Britain.