I was going to go to this one but the train is a total non-starter, it's too expensive and goes no where near the bloody ground :\ Willing to split the petrol money with you if anyone is offering. EDIT1: Come on you miserable gits, 31 of you have looked at this! I'm smashing company in a car!
I reckon 31 people have looked, seen 'London to Bristol' and thought 'no chance' but rather than having 31 people commenting saying 'on yer bike' surely this is better?
why don't you try the carpooling site in the UK? http://www.blablacar.com/ very popular here in France, easy to create an account, the site works out prices, you can be the driver or a passenger and ultimately you can rate the members like ebay as being trustworthy, reliable etc..
Because I doubt anyone would be commuting from London to Ashton gate and then back again within 3 hours unless they were going to the football! And why would anyone going to the football advertise it on a car pool site :S