Yes it is illegal, but I ride on the pavement regularly. I am an adult and it is a decision I make because I don't want to be mown down by a lorry or a negligent car driver who thinks that a cyclist is just a pain in the ar$e to be overtaken at all costs. i wouldn't dream of riding a bike through a shopping centre, but on quiet pavements, yes, and I will go on doing it, because a small percentage of motorists have no care nor concern for my life.