Yeah Happy Valley low & easy, but look out for broken glass as some of the local kids hang out there.
High Rocks is amazing, but again slow to dry & £10 a go now due to wankers busting over the fence & generally being ass holes..
Bowles is worth a look £3 or so a pop some nice bits & bobs, easy access, quick-ish drying, but a bit eliminate & tend to be low starts to existing route.
Harrisons is worth a dig too you have the North boulder & lot's of short routes that are good to boulder out above a pad.
Lastly if your new to the sandy stuff please wait 'till it dry's out as it breaks real easy, go easy on the brush & clean your boots before you climb.