Possible a Wellington on a delivery flight?
This link relates the loss of Wellington HZ129 which was shot down 19 November 1943 at location PLQ 24W/1634 (is this location close to yours?) The plane was being flown by 1 OADU (Overseas Aircraft Delivery Unit) on a flight from Portreath in Cornwall to Rabat.
http://www.rafcommands.com/database/...php?uniq=HZ129