I found a few bike shops from just searching Google but I haven't been to check any of them out yet. I'm hoping an opportunity for a second hand bike might come up during the year but I've had no luck yet. Though I'm thinking of leaving buying one till next summer as I a not-that-keen cyclist so I'll wait till the weather's good!
If you have access to DUO yet you can check their For Sale listings to see if any come up.