In reply to Removed Userdaverholmes:
Big Rock's bouldering is pretty good, but I think the popularity and busy-ness there is actually getting to the point that MK (or surrounds, say Bedford, Buckingham or other nearby place) could sustain a second centre, perhaps bouldering only. (I know there's the Pinnacle but that's primarily a roped wall, the bouldering room is very small)