Singletrack magazine have just uploaded all their favorite rides and trail centre info here.
In their words:
We've put together a list of all the best places to ride in the UK, from trail centres to natural trails. Each entry throws up a page of easily digested information designed to give you a flavour of the riding to be had.
We have imported the route guides from previous issues of Singletrack Magazine - complete with nice photos and PDFs of the route maps.
We have information on the types of trails on offer, difficulty, facilities on site and around the local area, links to accommodation and vital spares and even directions and postcodes for your sat-nav.
Our map shows the wealth of options you have when it comes to riding in the UK, so why not step out of your comfort zone, click a pin on the map, or list by region, and get away for a dirty weekend?