General
Lawn Tennis Association (LTA) - The Governing body of British Tennis
http://www.lta.org.uk
Warwickshire LTA - Warwickshire's Online Tennis Community
http://www.lta.org.uk/In-Your-Area/Warwickshire/
International Tennis Federation (ITF) - The World Governing Body of Tennis (includes Rules of tennis)
http://www.itftennis.com
Blue Print for British Tennis - The vision, direction and proposed outline for the future of the sport in this country
http://www.blueprintforbritishtennis.co.uk

Competitions
Wimbeldon
http://www.wimbledon.org
French Open
http://www.fft.fr/rolandgarros/default_en.asp
Davis Cup
http://www.daviscup.com
Women's WTA Tour
http://www.sonyericssonwtatour.com
Men's ATP Tour
http://www.atpworldtour.com