Basic long lasting good quality, FSA Orbit MX, can be picked up for well under £20 (this would work fine), higher up, Cane Creek 40, can be found for £40 or less, if you want Hope, Chris King or another high end brand, these will have to be 2nd hand, as they will be over you budget new, although as you need an EC 1 1/8th, they are common on the 2nd hand market as new bikes are all IS or more commonly ZS cups.

I your underwhelmed by the selection on Wiggle, triple your budget and get a new Chris King, Wiggle have as good a selection as anyone.