Slight misspelling(s): it was BK156 (and the navigator, P/O Juliusz Zywicki P-2535, has drowned).
BK516 (BH-K), No. 300 Sqn, was lost with the entire crew on the night of 13 March 1943 on a Gardening mission to St Nazaire.

Sorry, I should have noticed that mistake while replaying in this thread.
Indeed BK-516 captained by Sgt. Kuzminski had been lost almost a year before the above mentioned incident took place…