On its return to Britain, No. 12 Squadron received fresh supplies of the Battle, using them in attacks on the German invasion fleet then building the channel ports. The first Vickers Wellingtons began to arrive in October 1940, although the Battle did not disappear until November.
For the rest of the war No. 12 Squadron was part of the main bomber force of Bomber Command, concentrating on the night offensive against Germany. After two years operationing the Wellington from RAF Binbrook, the squadron moved to RAF Wickenby in September 1942, and soon after that converted to the Avro Lancaster, retaining that aircraft until 1946.
In November 1943 C Flight of No. 12 Squadron was detached to form No. 626 Squadron.
February 1938-November 1940: Fairey Battle
October 1940-November 1942: Vickers Wellington II
August 1942-November 1942: Vickers Wellington III
November 1942-August 1946: Avro Lancaster I and Lancaster III
Squadron Codes: PH
Group and Duty
26 September 1939: Bomber squadron with No.1 Group, 76 Wing, Advanced Air Striking Force
9 May-2 September 1939: Bicester
2 September-8 December 1939: Berry-au-Bac (France)
8 December 1939-16 May 1940: Amifontaine
16 May-8 June 1940: Echemines
8-16 June 1940: Souge
16 June-3 July 1940: Finningley (U.K.)
3 July-7 August 1940: Binbrook
7-12 August 1940: Thorney Island
12 August-7 September 1940: Eastchurch
7 September 1940-25 September 1942: Binbrook
25 September 1942-25 September 1945: Wickenby