Ah! in the UK...
I don't really know alternatives to the big brands (Multiblitz, Bowens, Elinchrom...) over there... i use Photogenic Studiomax Pro and StudioMax III AC/DC monolights. They are not that expensive and the System is affordable too -remember two things: buying cheap is fake economy and, when you buy equipment, you are buying into a system, and while the head is probably not expensive (no more than other brands) the accessories are usually overpriced.
I think Aliensbee are easy to find in the UK and well regarded http://www.alienbees.com/