Initial value: 80 IoMp
Avro Lancaster which was the principle heavy bomber used by the RAF in the Second World War. The four engine aircraft was used extensively in night raids, its long bomb bay being capable of holding the largest 12,000lb bombs; a total of 7,377 aircraft were built. During the night bombing of Europe they delivered over 600,000 tons of bombs in 156,000 sorties, most famously the Upkeep 'bouncing bombs' the 617 Squadron dropped on the Ruhr Valley Dams