NE London Bike Polo: Wednesdays: Mitchison Road N1 / Weekends:Hackney Downs E5

should do if its a hinged clamp, if not you can just file out the inside to accomodate the larger bars.

also, mike i've got a dirty harry lever you can try if toms won't work

Yea, that's what I'm on about, the hinged bit. I filed the inside of the last lever I used and it snapped. Could you bring that dirty harry tonight?