MandyW
Sharp and Bowyer's book 'Mosquito' has a photo of Capt CN (Nigel) Pelly (photo 117) at Leuchars and the full caption(Page 387) records that he was flight captain from September 1943 onwards. The copyright of the photo rests (or rested when the book was written) with DeHavilland. He is mentioned on Page 331 as possibly flying Marshal Timoshenko and having to fly with the bomb doors half open. He's also mentioned on Page 337 in the crew lists.
If you can't get hold of a copy of the book, PM me.