Since I normally fly Star Alliance this was to be a new experience for me.
I arrived at the gate with about an hour to freshen up and sample the offerings from the BA lounge. There was plenty of space and a small selection of bottled wine, plenty of hot and cold food and the Chicken Tikka Marsala was excellent. Good WiFi (except you had to ask for the password), pleasant staff and a short walk to the gate.
Who could ask for anything more .... except ... all the power points (that I could find) were UK ones. I guess it makes sense, but it is a trap for young players.
The showers were fine, basically equipped and enough space.