Rutan16
If you're referring to the time pre 2017 airline move, then your point is understandable, as I remember from an LGW documentary showing BA's big investment into their North Terminal check in and bag drop zone. However, things have moved on quite a bit since then, and BA now have a very nice check in zone in the South Terminal that strikes me as being larger than their previous home in the North Terminal, along with their lounges which have been generally well received by passengers. Plus, their branding presence (at least pre-Covid) in the South Terminal made the terminal feel more "home" to them in a way that North never was, given the rise of EZY operations there. So I'm sure that BA (as well as passengers alike) are eagerly looking forward to the South reopening, and hopefully soon