Yeah I agree. As far as I can tell, BT are the only ones offering a 52mbit service so I was forced to go with PlusNet's 80/20 service last time in order to get more than 36mbit.
I'm confused? Who is selling 36Mb services? BT can no longer advertise an "up to" 55Mb product and have been told to advertise it by national average. If you order the "36Mb average" service it is effectively a 55/10 service so can expect whatever you get currently.