Sergey. Most of the Blenheims were lost and I don't think it would be practical to return a few worn-out Mk.IVs to the UK; they would either have gone to other units on Malta ( all based at Luqa) or sent to the Western Desert as some others were.
This is an interesting piece on 107's time in October 1941. Losses were heavier later.
Nick
https://rommelsriposte.com/2012/12/1...-october-1941/