See loads around generally out and about at night or even at day but I guess thats mostly the work crowd, I have a few fellow watch fans at work and generally in this area is full of stockbrokers / bankers types. Have spotted several Panerai (saw a gold Radiomir at dinner last night), Patek's, Rolex's, Cartier's (most popular).
Most recent would have to be this morning saw a guy getting out of a freshly washed black X5 (dont they just look lovely) wearing a submariner going into blockbuster as I was coming out.