I have a Silca floor pump that works great (and are rebuildable and generally last forever, apparently); you should be able to find it for less than 30 UKP given exchange rates and all.
The only thing that I don't like about it is the little attachment thing you need to use to pump up presta valves (it's an adapter thing that gets pushed onto the valve, and then you screw the pump hose onto the adapter.)
the sigma lambda jet digital is great and its also portable! has digital pressure measurement and all and it beeps when u get to the desired air pressure