Depends how much you want to spend. Kitchins and Martin Wisharts are great or down that end of town there is also The Ship on The Shore which is great value and they do lovely fresh seafood.
This site lists all bikes for sale on popular sites around the web. Worth checking out when your pride and joy has been pinched. You'll see the pictures and on clicking will have info on where it has been listed. http://www.bikeshd.co.uk/ AJ