Whilst I couldn't agree more with the sentiment of "who cares what BA do", I spent 2 years working for a low cost version of BA (which also meant low cost pay - but hey, there you go). For what it's worth, I found the BA SOPs at best odd if not downright bizarre. The idea of the RHS (but PF) doing all the good stuff is fine if he / she can taxy the aircraft (requires a tiller on the right) and if the Captain/PNF can remember what drills/calls he/she is supposed to make at the important times. It was bad enough trying to remember all that stuff - try training ex SQ/CX/GF/EK skippers to do it as I was sometimes tasked to do.
I've been out of that scene for over a year now but I still get funny looks from (PF) F/Os when I grab the reverse thrust during the landing roll. Naturally,when I explain that it was a bad habit learnt from the worlds favourite airline they are eternally grateful for my input

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Cheers, Scottie.