Hi, I got my fencing in B&Q Liffey Valley. The guy doing the decking for me said he could have got them cheaper for me wholesale, so when I told him the price B&Q charged even with delivery, he was well impressed and said he was going there in future.
On another point - the 7ft fence. Just double check that you can do this in case your neighbours complain and you've spent your case. As far as I know, you can only put up a fence to the height of 6ft to the rear of your property and up to a height of 4 ft to the front.