AircraftBlenheim Mk IV, Mk IVFBlenheim Mk IV, Mk IVFBlenheim Mk IV, Mk IVFFamilyBristol BlenheimClassLight bomberChangesLengthened nose and extra fuel tanks, Mercury XV engines.Service193119321933193419351936193719381939194019411942194319441945United Kingdom · Western Europe≈ 3 Sep 1939 – 12 Aug 1941United Kingdom · North Africa≈ 11 Jun 1940 – Dec 1940Modifications 2193119321933193419351936193719381939194019411942194319441945Blenheim Mk IV≈ 3 Sep 1939 – 12 Aug 1941≈ 11 Jun 1940 – Dec 1940Blenheim Mk IVF