Shops

8 Ball Store - The official EPA shop.
UK Pool - The UK Pool shop.
Billiards.com - A vast array of discounted products from every major manufacturer.

Related software
Events software - Online event management and registration software that enables you to run and manage your events more professionally, profitably and easily.

Coaching
8 Ball coach - Professional pool coaching online.

Other links
Longmans Software - Some free software on this link.
Charity Exhibitions - Pool-related fundraising ideas with free exhibitions and free tables
Pool Student - For Serious Students of all Pocket Billiards Games
CCR-FM - Canalside Community Radio (my Dad's a DJ; guess which one).