Here are a few sites I  have come across on my travels which you may find to be useful, informative, or purely entertaining:

The UK Sea Fishing Diary

Very comprehensive site run by Phil Whiting.
Contains a large amount of information, including Catch Reports, Rig Building Etc. 

Neil Mackellow's Homepage

Former World Casting Champion, now an angling writer and technical consultant to Penn.  Neil's site has got some good clips regarding casting techniques. 

Village Net

A superb site for anybody requiring information on any subject in East Sussex and surrounding areas. 

Wealden Shore Anglers

Another local club that we have formed an association with, and will be fishing matches against in the future.

Total Sea Fishing Magazine

Excellent site run by TSF. Check out the   Bulletin Board, where you can get answers to your queries from fellow anglers.