British Warships of World War II by Lenton and Colledge contains a whole section on trawlers and drifter, including requisitioned vessels. Cant lay hands on my battered 1962 edition, daughter been house cleaning. Believe it was updated in the 90s, good bet to try your local library.
Try to get hold of a copy of "Harry Tate's Navy" by Jimmy Brown, ISBN 0 9522706 1 7 which was printed in 1994. This is the story of the Royal Naval Patrol Service who exclusively utilised trawlers and drifters during WWII. Don't know if he is still around but Jimmy's address was:
Yes,that's her....probably in the late sixties after she had been sold to a Hartlepool company.Perviously she was reguistered as BK29 at Seahouses,then LH368 at Port Seaton.It is the time from her orriginal registration as LH171 in 1935 to her registration as BK29 at Seahouses that I'm trying to discover;local legend says that she was requistioned for naval service during the war but no proff of this can be found....hence my query on here.
My thanks to everyone for their replies.