Thanks for the responses.
I want a co.uk domain name for my business, initially just for e-mail but may use for web site in future. The one I want appears to be available, I looked on 1 & 1 and Easily, the former being cheaper.
If I register through 1 & 1, or any body else for that matter, can I then use the domain name through my ISP such that I can keep it if I move ISP?
gom