LONDONcrawl - Offers guided pub crawls in central London. - http://www.londoncrawl.com/
Monopoly Pub Crawl - Has routes for doing the Monopoly pub crawl, both in the order of the board and out of order. - http://www.monopolypubcrawl.org.uk/
Jubilee Line Pub Crawl - An easy pub crawl for the eastern half of the Jubilee Line from Stratford to London Bridge. - http://www.seery.btinternet.co.uk/jubilee/
Clem's Pub Crawls - Details of various short local crawls, and of monopoly pub crawls, from 1989 onwards. - http://www.clem.clement.btinternet.co.uk/crawls.HTM
SoakedInPort.com - Includes guides to the London Monopoly and Circle Line crawls, with timings of their previous drink-throughs and for the one London Alphabetical and the one Brussels Monopoly crawl. - http://www.soakedinport.com/
The Circle Line Pub Crawl - The classic circle-line crawl, and several variants thereof. - http://www.thecirclelinepubcrawl.co.uk/
Aidan's London Pub Crawls - Short pub crawls in London, with maps, timetables and brief commentary on the areas and the pubs. - http://www.alpc.co.uk/