BIKEmagic

The UK's Complete Online Cycling Resource: Bike News, Reviews, Find a shop, club, route or riding friend near you.
http://www.bikemagic.com/

Gorrick MBC

Organise mountain bike cross country events in Berkshire, Hampshire and Surrey. Calendar of events, results and entry details.
http://www.gorrick.com/

bloodsweatngears

Mountain biking site with a focus on southern Scotland and Northern England. Contains reports, galleries, news, videos.
http://www.bloodsweatngears.co.uk/

mtb-freeride

Focus on mountain bike freeriding, shop, mailorder, custombuilds, downhill crosscountry mountain biking, mtb freeride park, trials
http://www.mtb-freeride.com

Fat Tyre Mountain Biking (FTMB)

Information and fun about British Downhill and Freeriding, interviews, race reports, articles, news, galleries, product reviews, buy and sell, classifieds, bulletin boards
http://www.ftmb.net

britishtrails

Comprehensive source of information for MTB events, calendar for the British Isles, routes, news, trails, gallery, links, xc, enduro, trailquest, downhill.
http://www.britishtrails.co.uk/

Bear-Rs

Mountain Biking In Northern England. Routes, Photos, Forums and Advice.
http://www.bear-rs.com

IMBA-UK

IMBA UK promotes environmentally sound and socially responsible mountain biking. Trail building help and advice.
http://www.imba-uk.com/