Try contacting the Lambeth Community Care Centre in London (part of Lambeth PCT - sorry I can't remember the details) - they run an extensive falls service with input from a consultant from Guy's and St. Thomas's. They will be able to provide you with an outline of their program as well as the outcome measures they use etc.
The Otago program is also used by them but on an outpatient basis with regular monitoring for those who are more motivated and lower risk. The program for the group is slightly different and is geared to higher risk patients and those with cognitive problems. They were reviewing the service approx. 1 year ago so may have updated since I was last there.