Found this on the Net:
FRANK CLEGG from Harrogate was the W.Op on an Anson operating out of RAF Millom, Cumberland. On 12 Dec 1943 he was on a training flight over the Irish Sea when the aircraft had engine failure and ditched - fortunately in the shipping lanes. After 10 hours in the dinghy he was spotted by a Free French cargo boat and taken into Liverpool.

Source:
http://www.thegoldfishclub.co.uk/newmembers.html

Can someone provide me the Anson serial and type, and the names and fate of the remaining crew ? I would also be interested in the ID of the Free French cargo, with which I could search more in the French archives.

Best regards