Thanks Andy

Appreciate the time you’ve taken to research this information, its a bit of a grey area with photographic evidence, etc.

I seem to remember reading someone at the time talking plural when mentioning the Wellington on the tests.
(hindenburg) I’m guessing here that the film alludes to lack of Wellingtons when in fact they were being replaced in Bomber Command by Halifax, Stirlings and (now) Lancasters, so a bit more plentiful than originally thought.

(Spitfiresimon) Could a full size upkeep fit a Wellington bombay? I keep looking at the movie to watch the drop and it does look like it. Even though the film makers or censors have messed with the image, freeze framing indicates that this was so.
Was it easy to change the working mechanism for a single spinning mine to a ‘brace’?. Looks like a lot of work to me.
(bazv) Have to say the brace in the photograph does appear to be Highball and with the secrecy during late 1942 there may be no (surviving) photos taken of the Wellington Upkeeps at all.

I thought the first bouncing bombs were scaled half size to the final Upkeeps, however there maybe some confusion due to wood surround disintegrating when dropped.

thanks to all who have responded so far

All 19 Lancasters that took part in the raid have been completed as have McCarthy’s ‘Q’ Queenie, which didn’t, and Jerry Frays EN343 PRIX Spitfire that took all those historic photos.

BJ895/G is coming together and I agree she wore no codes which makes life a little easier(!) Its just the bombay/bomb load etc and we’re there.

thanks again

Baz