Any other 123-Reg users on here? I've got a few .co.uk domains with them and am fairly happy with their services. The prices are good - £2.99 per year.

I found that ukreg.com offers slightly better prices but I would pick 123-Reg over them because of the level of control they give you. On 123-Reg, you get full DNS control to add/edit/remove as many A, CNAME, MX and TXT recerds as you want - a level of control you don't get with ukreg.com. It may not be the easiest control panel to use, but for me it gives me as much control as I need.