There is endless amounts of information about swimming on the internet, the following sites could be useful to you:

Swimming.org http://www.swimming.org/
British Swimming http://www.swimming.org/britishswimming/
The Amateur Swimming Association (ASA) http://www.swimming.org/asa/
The Institute of Swimming (IoS) http://www.swimming.org/ios/
Swim 21 http://www.swim21.info/
The ASA – North East Region http://www.asaner.org.uk/swim/
Northumberland & Durham Swimming Association http://www.ndcasa.org.uk/swim/
Borough of Stockton Swim Scheme (BOSSS) http://bosss.org/
Tees Active http://teesactive.co.uk/
Event Photography North East http://www.eventphotographyne.co.uk
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