In reply to John_Hat:
There is pretty much no climbing in Portsmouth,
Fort Purbrook will keep you entertained for an hour or so.
Hayling Island's wall is Hi-Rock, it is in a school hall so is only open in the evenings.
I travel up the A3 to Craggy Island, They have a social night on a wednesday and friday night if you are short of a climbing partner.
Surrey Sports Centre is an alright centre, there seems to be a lot of people that like it there. The bouldering is really good, however I was put off of going back after finding two spinner on the two roped climbs that I did. I know that you will come across them from time to time, but two in 5 minutes seemed odd. I was then asked by the member of staff that we reported it to, if I could go back up there and tighten it for them.
Calshot is a good centre, if only you didnt have to drive thru all the small town bits to get there. It is actually closer to me (havant) however it takes longer to get there than Craggy.
The other centre if you dont mind a little drive up the A3 is White Spider, it takes an hour from mine. They are currently making the boulder section bigger by extending the comp wall, they have a get boulder roof section (6B roof on the last set was 22 moves long, and only about 8 were up the vertical wall). They also have a nice lead wall that goes into a roof with some interesting stalactite to work around.
I think that pretty much covers all the 'local' centres.