GT Avalanche then or something similar
£229 all in
http://www.leisurelakesbikes.com/Pro...7-efcda3650a6b
have a look at a few of those sites and they have reviews for all price ranges....
but i must say, WHAT MTB just did a review of sub £100 bikes and they didnt last 5 minutes. seriously!
like cars really, you get what you pay for. but the GT is a GREAT bike for the cash