Vintage ATCO,
That was XB259 the first and last production Beverly to fly. It first went RAE Farnborough and remained there until the early 1970's when,as you say Court Line aquired it in 1973. When they had gone bust North Country Breweries bought it and had it flown to Paull Airfield near Thorngumbald, Hull on 30th March 1974.
After the airfield closed seven years later it was moved to the Museum of Army Transport at Beverley in bits and re-assembled there.
Tiger_mate,
The book series the one published by Crowood?