Found at least one cabinet enabled. Exchanges can be listed saying they are enabled if 6 or more cabinets are done. I'm sure it's 6. Might be wrong though. Anyway, here's the one I found.
http://i.imgur.com/NwLYWvE.png
Address 85 BROADSTONE RD, BIRMINGHAM, B26 2BY on Exchange STECHFORD is served by Cabinet 31
WBC FTTC Up to 58.9 Up to 20 -- Available
WBC ADSL 2+ Up to 6 -- 4 to 8 Available
WBC ADSL 2+ Annex M Up to 6 Up to 1 4 to 8 Available
ADSL Max Up to 5 -- 3.5 to 7.5 Available
WBC Fixed Rate 2 -- -- Available
Fixed Rate 2 -- -- Available
Other Offerings
Fibre Multicast -- -- -- Available