Blenheim If of No.141 Squadron RAF. The squadron trained with the Blenheim for a short while between December 1939 and April 1940 (when it re-equipped with Defiants). With the Blenheim No.141 was based at RAF Grangemouth (RAF Prestwick from 13-22 Feb 40), later moving as an operational unit to RAF West Malling in July 1940.