I visited Wings Museum in Sussex a little under two years ago and at the time I was fairly sure that I had spotted a B-25 Mitchell, or a good part of it, around the site. However, as it was not actually on display there was no information about it.
Since then I have seen that the airframe is a B-25J built in early 1945. It did not see active service but was used for training and other roles before it was converted to a camera ship and came over to the UK for filming of The War Lover and then 633 Squadron.
Sadly after that the aircraft fell in to disrepair at Biggin Hill before going to a museum at Southend for a number of years. When the museum closed the aircraft went briefly to Duxford and then to North Weald where is was painted up as 'Bedsheet Bomber'. The aircraft did not fare particularly well at North Weald and was then shipped out to North Coates followed by Wycombe Air Park for more proposed periods of display that actually ended up as further periods of neglect.
The aircraft has subsequently been acquired by Wings Museum for static restoration. When I saw it the aircraft was incomplete but the missing centre section and rear fuselage have now been acquired as well enabling a complete restoration to be carried out. There is even the possibility that it could be restored to ground running status but I imagine that is a way off.