Icare: That is, indeed, the incident mentioned. The question of who was in control during those final minutes will almost certainly never be resolved but, from what is still available at AHB, there does not appear to have been any information available to the Board of Enquiry to suggest that it was not the pilot, FS Holdsworth - and he may indeed have been suffering from injuries sustained over the target area. Were I to speculate, I might suggest that there was an (additional?) engine failure at a height and speed on the overshoot that made regaining full directional control impossible before the impact with that hangar was inevitable.
The 5 hours 13 minutes that HX 181 was airborne that night sits comfortably alongside the range of flight times for those aircraft that recovered to base at Melbourne, east of York. These range from 6:15 to 6:50. (And whatever the case elsewhere in the UK, fog was not an issue at Melbourne that night, though it was throughout the following day.)