if your budget is that small then you'll have to patient, plenty of people on the forum are selling complete bikes for upwards of £250, stretch the budget and you'll get something nice, you get what you pay for in all things. Be realistic about what you want and what you can afford, but don't do yourself a disservice by being too cheap, if you're after a stolen bike from brick lane (bad karma) then your budget will be enough if you want to get a foot on the ladder spend some more and get a bike which you'll be proud to call your own.
if your budget is that small then you'll have to patient, plenty of people on the forum are selling complete bikes for upwards of £250, stretch the budget and you'll get something nice, you get what you pay for in all things. Be realistic about what you want and what you can afford, but don't do yourself a disservice by being too cheap, if you're after a stolen bike from brick lane (bad karma) then your budget will be enough if you want to get a foot on the ladder spend some more and get a bike which you'll be proud to call your own.