14 Bike Co. is the hottest fixed gear shop in the UK, this place has all the gear you would need from nuts and bolts to full custom built bikes and everything in between. I was at the shop a couple of weeks ago and was really surprised by how nice all the staff were, not something I am used to in London! There's so much stuff in there I came out having really not looked at anything and as soon as I got home I wanted to go back there for a proper look!
The custom bikes they build are just perfection, words can't explain how awesome they are so check out their flickr stream: flickr.com/photos/shopfourteen and then click on any of the photos below to go their blog.