Swimming.org - Swim England (formally the ASA) is the governing body for the sport in England. In this section you will find all you need to know about joining a club or competing in England and becoming a swimming teacher or coach. The site has a membership check page that allows you to find your membership details.
Swim England South East manages the regional swimming championships. It also handles licensing for other meets in the region. Regional qualifying times can be found on this site.
Berkshire and South Buckinghamshire ASA is the county of which NDSC is a member. They organise the county championships and other meets. County Qualifying times can be found on this website under County Meets | Championships in the promoters conditions.
Pullbuoy.co.uk - Pullbuoy first went online in June 2000, which means that it has been online for 10 years! In that time the site has gone through many changes but has been the leading independent swimming site in the UK, bringing interviews features and swimming utilities to the web. The site has a useful course conversion tool under Time Conversions, always use 'ASA Tables' if entering a meet.