The Bristol Blenheim was a light bomber, developed for the Royal Air Force in the mid 1930s. The Blenheim Mk.I entered service with the RAF in 1937 and was used extensively during the first two years of the Second World War.
The Mk.IF was a long range fighter derived from the Mk.I by adding a gun pack containing four 0.303 inch machine guns. Less manoeuvrable and slower than anticipated, it suffered heavy losses as a day fighter, so was relegated to night fighting. In this role, once equipped with radar, it performed well, until replaced by the Bristol Beaufighter.
The crew of a Bristol Blenheim Mk 1F of No. 604 Squadron climb from their aircraft at Northolt, April 1940.Bristol Blenheim Mk 1F ZK-P of No. 25 Squadron in flight, April 1940.Bristol Blenheim Mk. IF RE-O of 229 SqnBristol Blenheim Mk.IF YX-N of 54 OTUBristol Blenheim Mk.IF L1396 WR-E of 248 SqnBristol Blenheim Mk.IF L1210 Fleet Air Arm 771 SqnBristol Blenheim Mk.IFBristol Blenheim Mk IF fighters of 601 Sqn Sep 1939A 29(F) Sqn Bristol Blenheim Mk IF late 194029 Dec 1939 a 25 Sqn Bristol Blenheim Mk IFA 23 Sqn Bristol Blenheim Mk IF winter 1939-40A Bristol Blenheim Mk 1F of No. 25 Squadron being refuelled at Northolt, April 1940Bristol Blenheim Mk 1Fs of No. 25 Squadron being refuelled at Northolt, April 1940.The transmitting antenna of the AI Mark III type radar installed on the Blenheim Mk IF
