ukreg

[u2-web]

Have you tried, ukreg.com I currently use them and have found their support, prices more than agreeable.

[swiftdomain]

I mate of mine used them, no problems so far

[Balue.com]

I use them for my .co.uk domains. I find their support a little slow, but that is probably due to my own set standards. One problem which you will find with UKreg is that when a domain has expired, it remains in your control panel for some reason. This becomes a problem when you have registered a vast amount of domains that you have let expire.