A Heinkel He 111 bomber flying over the East End of London at the start of the Luftwaffe's evening raids of 7 September 1940.
Flying Officer Leonard 'Ace' Haines of No. 19 Squadron on his Supermarine Spitfire Mk I at Fowlmere near Duxford, September 1940.
Air Chief Marshal Sir Hugh Dowding, Commander in Chief of Royal Air Force Fighter Command during the Battle of Britain.
Supermarine Spitfire Mark Is of No. 610 Squadron based at Biggin Hill, flying in 'vic' formation, 24 July 1940.
Squadron Leader Douglas Bader (centre) and fellow pilots of No. 242 Squadron, Flight Lieutenant Eric Ball and Pilot Officer Willie McKnight, admire the nose art on Bader's Hawker Hurricane at Duxford, October 1940.
Squadron Leader Douglas Bader, CO of No. 242 Squadron, seated on his Hawker Hurricane at Duxford, September 1940.
Pilots of No. 19 Squadron relax between sorties outside their crew room at Manor Farm, Fowlmere, near Duxford, September 1940. Left to right: Pilot Officer W Cunningham, Sub-Lieutenant A G Blake of the Fleet Air Arm and Flying Officer F N Brinsden.
Squadron Leader Brian 'Sandy' Lane, CO of No. 19 Squadron (centre) confers with Flight Lieutenant Walter 'Farmer' Lawson and Flight Sergeant George 'Grumpy' Unwin at Fowlmere near Duxford, September 1940.
The temporary Filter Room set up at RAF Fighter Command HQ at Bentley Priory, Stanmore, Middlesex, 14 February 1940.
Armourers replenish the ammunition in a Hawker Hurricane Mk I of No. 310 (Czechoslovak) Squadron RAF at Duxford, Cambridgeshire, 7 September 1940.
A Supermarine Spitfire Mk 1 of No. 19 Squadron RAF being re-armed between sorties at Fowlmere, near Duxford, September 1940.