Superb little dive shop located in Acomb. They have a great variety of stock including second hand stuff if you want to save a bit of money. They can also order stuff in for you and give you a ring when it arrives.
If you buy a wet suite you can try it on too which is great because they can be a pain to buy!
The owner appears knowledgeable, enjoys his job and can help you (I believe) learn to dive - or at least help you register with the local diving school.