Cricinfo
For all the latest news in cricket and statistics, including information about upcoming tours and tour dates. It also contains links to the Wisden Almanac which is the most thorough collection of cricketing history and records.
Cricinfo

ECB
For up to date information from the England and Wales Cricket Board. Regarding all aspects of cricket in England and Wales
ECB

Lords
The Lords website. Contains information about Lords and the MCC. It also includes a detailed section of laws of the game including diagrams and interpretations of the laws.
Lords

Cricketarchive
Archives of cricketers, records and articles in a simple easy to use website.
Cricket Archive

BBC Cricket
The BBC cricket website. Has the latest news and details about matches and fixtures. It also contains a section where tips for aspiring cricketers are archived, along with basic rules and and FAQ section.
BBC Cricket