In reply to Choss:
The quarries have some good bouldering, but many will be wet at the moment. Brownstones is the obvious exception - fast drying with good landings. There is also some good fast drying bouldering at the Wiltons.
Natural grit is always a good bet over the winter. Blackstone Edge is just down the M62 and has loads to go at in the 7's, mostly decent landings and not too high. Nearby Cow's Mouth and Dove Lowe are good too.
Here's a little vid of some Blackstone problems
I'm working on a Lancashire Bouldering guidebook which will cover all the newly documented bouldering in the area. Should be finished soon. For now, there are some links to local topos and details on the guide here:
http://www.lancashirebouldering.com/