Avro 694 Lincoln I
Originally the Lancaster B.IV, the degree of design change led to the aircraft being soon renamed the Lincoln B.I. Production was only commenced very late in the war, and so no Lincoln aircraft was in active service by war's end.
The initial installation of 3-bladed propellers was found to be problematic, and so four-bladed props became standard.
There was no significant difference between the B.I and B.II models other than the marque of Merlin engines, but the inferior performance of the B.I and the end to the war meant that most B.I aircraft were flown from the factory into directly into storage, and most were scrapped with only the repositioning flight hours in their logbooks.
Production was also planned for Canada, and a single Lancaster B.XV was produced - an Americanised Lincoln B.I - before production was cancelled.
Avro 694 Lincoln II
Originally planned to be the Lancaster B.V, the aircraft was renamed the Lincoln B.II before the first aircraft was completed.
Like the Lancaster, the Lincoln was planned to be sent to the Pacific to operate against Japan, but the end to the war meant that the initial production contracts were massively scaled back, and the Lincoln was never able to live up to it's potential. However compared to American late war bombers, the Lincoln was a war winner for 1939 not a step forward for the 1950's.
The only major variation for the Lincolns were a brief fitment of enlarged Tallboy bomb bay doors (which was soon shelved due to postwar cost cutting) and variations on radar fitment.
An attempt to convert Lancaster and Lincoln aircraft into remote target drones led to a single aircraft being converted into a U.5 target drone, that only ever flew with a human pilot before the programme was scrapped.
Avro 694 Lincoln 30
Production of the Lincoln was also undertaken in Australia, with the local aircraft being allocated as Mark XXX, changed to Mark 30 with the change to Arabic numbering for the RAF.
Avro 694 Lincoln 31
Development of the Mark 30 lead to the extended nose Mark 31, the largest aircraft ever constructed in Australia.