Simon Glancey has submitted the following:
Sgt Walker was killed when Bristol Blenheim IV V6457 UX-T of 82 Squadron was lost on a mission to Heligoland. The Blenheim is presumed to have been lost over the North Sea, with the loss of its three crew members.
Royal Air Force Bomber Command Losses of the Second World War: 1941; W.R. Chorley; 1993; Midland Counties Publications; ISBN 0 904597 87 3, page 60
John Jones adds that the aircraft attacked a convoy near Heligoland. It crashed into the North Sea 130 km north-west of Texel at 15.45. The action was claimed by Oberleutnant Paul August Stolte of 3.JG1.
Alan Lowther Walker is remembered at Barnard Castle on B135.19 and B135.22
