Avro Lancaster aircraft under construction at the A V Roe & Co Ltd factory at Woodford in Cheshire, 1943. Despite constant losses in air battle over Germany, new production meant that the numbers of aircraft available were always increasing.:
RAAF Lancaster bombing up. The engine mounting used for the Merlin on the Lancaster was originally developed for a Merlin powered Bristol Beaufighter, but was used when Manchester's wing was stretched to accommodate an extra engine. On the the remaining flying examples the same exhaust for the Merlin is used as on the Spitfire, but in this wartime photo it is possible to see the anti flash manifold.