Thankfully everyone does handcrafted leather and has real wood interior trim as an option. Everyone also provides the highest quality of leather/fabric as an option (ex, BMW Individual).to tell you the truth, when i think of a luxury sports sedan then my mind goes to a jaguar, a Bentley, a Maserati ..yes there is a 7,8,6 maybe series that are somehow luxury ,but in my mind a luxury car , a sport or not is something with a heritage behind, you know its as expensive as an exotic sport car , has handcrafted leather ,real wood interior e.t.c .
so in that case for me, bmws are sports cars but not luxury, imitation of luxury i would say
I'm surprised being in the UK you didn't mention Alpina or Mercedes Benz. I'm kinda surprised you mentioned Bentley (i.e. VW) but not Rolls Royce (i.e. BMW).