OK the lowdown on Berkshire (Wokingham/Bracknell) as far as tropical fish are concerned......
Animal Aquatics, Wyevale Garden Centre Wokingham - small outfit, staff are friendly and helpful, as for the fish unless you only want, platies or mollys they haven't got a huge selection. As they are small they don't hold alot of stock so if you are looking for specilist foods, products you may not find them here.
Maidenhead Aquatics, Wyvale Garden Centre Binfield - Staff here are excellent and very helpful (avoid weekends as it does get busy) the fish stock is very varied and there is alot of choice, however, they have a RO purifier because of their discus which means that their stock is kept in PERFECT conditions, when in reality, berkshire tap water is moderately hard and at a pH of about 8. They have a good stock of aquarium products.
Maidenhead Aquatics, Wyvale, Hare Hatch (A4 between Twford and Maidenhead) - again staff are excellent. The fish here are kept using local tap water so should be acclimatised to your tank conditions. The fish are very healthy and there is a good variety of fish to choose from, I enquired about some rainbows I was interested in and they even offer to order them in for me. Even though this is further afield l will be getting all my fish from here in future.
Aquasplash, Ladds Garden Village (A4 as above) - I wasn't impressed with this place at all. The tanks are scuffed and brown algae limits visability in the tanks, and one of their angel fish had a very bad case of white spot and didn't appear to be quarantined. Understandably I didn't stop long enough to look at the variety of products stocked.
World of Water, Grovelands Garden Centre, Shinfield - Again not impressed with this place either, dead and dying fish in the tanks. Tanks labelled incorrectly, I might be new to the hobbie but I know enough to know that red tailed sharks do not resemble platies in any way shape or form.
There are a couple of other LFS's that i've not had the pleasure of visiting yet so apologies if I left any of them out.
i use a shop in bolton called britsh aquatic suprestore it has a massive supply of fish both marine and fresh it is huge and has many new to the hobby speices and fish just lately i went over the bank hol and they had some red arrowans in these fish are endangered and come with their own id chip and cert of authen but they were well out of my price range @ £300 but the polka dot botias wernt if i had any room in my tank i have bought some i also found a shop on the net called whalf aquatics in pinxton nottinghamshire anyone know anythink about it it looks quite good they have got a 1500 gallon display tank with a full grown red tail cat in it 
have you been to the fish farm @ daisy nook (ashton u lyne) yet its new they have tropical cold koi check it out
