Hi there,   Sorry to interrupt. But my trusty bike, which I bought in 2000 from the London Loot for 40 quit and which has carried me day by day miles and miles around where ever I had to go, died yesterday. I really finally have to lay it to rest.   So needless to say I am in urgent need for a new one. I would like a used one, have no need for new and shiny things and it should be a men's as I am rather large - or tall sounds better. It should be a strong, well functioning mountain bike type, but doesn't have to have elaborate suspension systems and all that. It needs to be Bristol and London traffic safe. And I need it rather soon, as it is my one and only form of transport.   Can anybody help? Any tip is welcome!   Thanks in advance.   Gratefully   Kathja