Unit History: 6PRU/27 group 55

this was on my grandads demob book in 1947 he was with i believe bomber command 1944-1946 and he was an air gunner with the lancaster/wellington planes. he was involved in a crash over lincolnshire and was then involved in repatriation of italy. his name was kenneth pursehouse. i was told that this unit was possily a transport unit this is all i know
regards janine