Hi
The Sorpe was attacked with Tallboys on 15 October 1944, 18 Lancasters (617 sqn) with 12 bombs from 13,000 and 15,000 feet, it sprang a leek but did not fail. Here is the post attack aerial photo:
View attachment 792975
Info from 'Bombs Gone' by MacBean and Hogben, pages 144-145.
Mike