With fasthosts it seems you can, with one account manage domain names with different registration details ie name of registrant, address etc. Is there an alternative registrar with cheap prices that you can do that with. I was with Daily but had to have a separate account for each registrant. I've taken a dislike to Daily (massive price increase that they didn't notify me of and truly horrible new control panel)
im positive you can with 123 as well stay away from names.co.uk though ! cheap reg, ridculous outbound transfer fees & renewal fees
As far as I understand your previous host was in US. So for US company you can check: knownhost, kvchosting.
Your post has spurred me to sign up with Daily.co.uk to take a look at the control panel. Did you prefer whatever their previous control panel was like?