I transcribed (not yet corrected or fully edited) one of the letter describing the trips, in late 1944. This was post BOAC, in fact 511 squadron and Yorks for transport command, but it continues essentially the same flying patterns so worth a look.

You can find it here

Very interesting to compare with modern TP run trip reports, and note things like the poor review of Gibraltar and how the crew get increasingly sulky and argumentative with the authorities towards the end of the trip. Plus ca change, basically. But it really fills out the detail of the log entries, not because it's exciting and dramatic, but for the banality of much of it.