Our dear friends:
Leeds Cycle Action Group - THE campaigning and information group for cycling in Leeds.
Fixed Gear - Leeds - THE Fixie HQ of Leeds ('in construction' at the mo' - but keep it bookmarked).
Leeds University Bicycle Users' Group (BUG) - A great resource for everyone.

LATEST LINKS:
Routes2Ride -  "routes2ride, the community website featuring the best cycle rides in Scotland".
Momentum Magazine - "reflects the lives of people who ride bikes ... provides urban cyclists with the inspiration, information and resources to help them fully enjoy their riding experience and connect with their local and global cycling communities."
Communte By Bike -  green and general blog fo all cyclists.
Cycle Transport - West Yorkshire - http://www.cycletransport-westyorks.co.uk/ - an information-packed cycling and public transport site for West Yorshire.
MORE TO FOLLOW . . .

Fixed Wheel:
Chaingang Rotafixa S.p.A. - Fixie people from Italy.
Fixie FAQs - Get converted.
Fixed Gear Gallery - Get addicted.
Fixed Gear London - Fixie people from London.
MASH - Fixed gear riding movie.
Trackstar - Fixie shop and culture from NYC.
Trafic.jp - Very very nice fixies (and other) videos - definitely worth checking out.

Maps:
MTB Britain - British mountain bike routes et al.
Official UK Council Cycle Maps - The name says it all.
Sustrans - The National Cycle Network.

Magazines:
AtoB - "Folding bikes, electric bikes, trailers, trikes, trains and alternative transport".
Bicycling Magazine - videos, pics, techniques, training - in fact, something for everyone.
BikeBiz - "The cycling industry's premier publication".
Dirt - Great MTB magazine with a soul - if you don't know it yet, surely grab a copy.
Practical Pedal - A (downloadable) magazine making cycling an enjoyable form of transportation, rather than just sport or recreation.
Procycling - " Europe's Number 1 Cycling Magazine".
Shred - A (downloadable) magazine for those who enjoy fighting their way through the mud.
Velo Vision - a quarterly cycling magazine celebrating cycle culture worldwide.

Misc.:
Amsterdam Bicycles - Brian's 73-minute visit (photo-journal) to Amsterdam.
Bike Lane Diary - Toronto-based blog but helpful to all all cyclists.
BikeReader - "a rider's digest", humour, essays, travel, pics and more.
BIKESutra - "the web directory containing the most comprehensive links to all cycling related websites" - very good!.
CycleWeb - All cycling things.
Keirin Berlin - Keirin cycle culture café.
Transport for London - All about cycling in London.

MTBing:
Blue Collar MTB - a brilliant blog for mountain bikers.
Hannah Steffens - "The Princess of Dirt" and one of the world’s premier freeride mountain bikers.
MTB Unterlagen - Even more old school stuff.
MBTR - See what mountain bikers think of a given component, bike or product - "a site by mountain bikers for mountain bikers".
Old Mountain Bikes - More 'old school' stuff.
UK-MTB - MTB user forum.

Safety:
Bicycling Street Smarts - Tutorial for safety and confidence while cycling on road.
CycleHelmets.org - the Bicycle Helmet Research Foundation's site - thought-provoking.

Security:
Sold Secure - Non-profit tester of bike locks and other security devices.

Sustainability:
Bike Recycling - Bicycle recycling and re-use projects in the UK.
Brookes University, Oxford - Recycling and cycling in Oxford.
Intelligent Giving - Where to recycle your bike.
Permaculture Association (The) - Leeds is proud to host the British Permaculture Association. We're proud to support them!
Reuze - The how, what and where of recycling in the UK.

Technology & Technique:
Bicycle Design - some interesting new ideas and concepts.
Bikeforall.net - "Everything you wanted to know about cycling but were afraid to ask" - an all-encompassing British source.
(The) Bicycle Info Project - 'Old school' catalog pages and technical brochures.
Campagnolo - Components, groupsets, etc.
Exploratorium - "Why is the bicycle the most efficient way to travel".
Kalavinka - Japanese frame builders, very nice.
Mountain Bike Product Reviews - Great site, dig in.
Phil Wood - The Superhubs.
Raleigh - The traditional name of UK cycling.
Raleigh Choppers - "The most comprehensive collection of Raleigh Chopper bikes in the World!!"
Reynolds - Ever wondered what is that 531 sticker about?
Richard Sachs - Steel, lugs, magic - meet The Wizard (and read the articles section).
Sheldon Brown (RIP) - Great bicycle technical info.
Shimano - Components, groupsets, etc.
SRAM - Components, groupsets, etc.
Tune - You think Deore is top of the range? Think again.