There are a lot more "BA -isms" than the monitored approach, far too many to recount here.
I must be honest though, in deciding to apply to BA, unique BA SOPs formed 0 part of my decision making. It was as irrelevant as the choice of coffee supplier in the report centre.
I was applying to the airline, to fly the metal on the routes, the associated lifestyle, finacial benefits and dare I say staff travel and prestige. I flew my old man to the USA last week on a trip of mine in business class, for less than it costs to park at an airport these days. How many are afforded such opportunity? .. so whether it is the monitored approach, or the PM idling the thrust lever on an EFATO (against Boeing) .. just nod, pretend you think their way is the best thing since sliced pan and get on with it.