Having a go at this,only used the kit and a Kilo bag of Young's Enhancer if this turns out as tasty as the coopers stout it will be on the buy me again list.
If you have a good local homebrew shop they'll have hops and advice, if not then there are loads of good online shops, http://www.thehomebrewcompany.co.uk are good and there is a member's discount available, also http://www.worcesterhopshop.co.uk
If you're just after a pack of hops, have a search on ebay, you'l be able to find loads of suppliers, some with free postage, see what suits you best.
Thanks Guys There is a new shop oppened about 20 miles from me only 2 or 3 months ago I will give it a visit and see what is available to enhance the kits.