Unipack / Create / Sports Direct singlespeed track bikes?

I saw the bloke on the Portobello market with these dodge bikes and people were snapping them up. I'm after a second hand single speed or geared bike for £150-200 and I will not down the unipack route.

keep you're eyes peeled on the bay for fixed or ss bikes, many of them go for around 200 pound mark.

also you can make your own convertion for that amount, cheap racing frame/cranks/saddle/bars for 50-60 pounds, 100 quids for fixed wheelset and the rest on tyres, chain sprocket, etc. You can easily get a bike within your budget with a bit of sweat and some good research...