Online bike shops

Velosolo just sorted me out with a few bits - stem, risers, headset and grips. Good service and fast (but not free) delivery - seem like nice people as well. I'd never heard of them before but they have a load of good value parts under their own brand that looks worth trying, and some helpful faq's.

http://www.velosolo.co.uk/

+1, great customer service. Ordered some cogs and lockrings from them which were orginally out of stock, yet they were in regular email contact with me to ensure I received them fairly quickly.