Cycling on the pavement is illegal. The reason it's illegal is that it is ANTISOCIAL, STUPID, and potentially DANGEROUS.
Cycling on a crowded pavement, even if it wasn't illegal, would still be ANTISOCIAL, STUPID and potentially DANGEROUS.
When you are told "stop cycling on the pavement" by somebody you have just nearly run over by trying to cycle off a busy pedestrian crossing onto a very narrow pavement, the correct answer is not to point at a nearby toddler on a plastic trike (on the pavement) and say "He's cycling on the pavement." Nor is it to yell "FUCK OFF".
Toddlers are allowed to cycle on the pavement, even though it's still fucking irritating and still fucking painful when they run over your heels/toes. However toddlers have an excuse for being as annoying and stupid as 2-year-olds, namely they're, like, actually two years old, and are still in training for being useful and non-irritating members of the human race. If you are riding a bike that's nearly as tall as me and you're old enough to have a stupid haircut, a tweed jacket and a cocking iPod -- and to shout FUCK OFF at strangers -- then I'm guessing you're actually old enough to learn to cycle on the road.
Furthermore, even if some OTHER CRETINS have parked their white vans and their sodding vanity-numberplated SUVs in the cycle lane and the zigzags so they can sit and read the paper while their morbidly obese other half waddles the 1.5 metres to the shop to buy fags and cake, that STILL doesn't make you NOT a cretin for cycling on the pavement.
Oh, and while we're here:
Cycling while smoking or using a mobile phone is probably not, in itself, illegal. It is, however, STUPID and potentially DANGEROUS. Yes, I know, you have superhuman balance and control and psychic powers which prevent other people doing anything unpredictable within a 5-metre radius of you; you are therefore quite capable of cycling while smoking, texting and juggling chainsaws, WHILE BLINDFOLDED. So get a fucking unicycle and join the circus. Oh, by the way, unicycling on the pavement? ALSO ILLEGAL.
P.S. AND NINTHLY I don't want to know how ACTUALLY you ALWAYS cycle on the 40-foot-wide well-lit pavement outside your HOUSE and it's just the fascism of the nanny state and health-and-safety-gone-mad that says that's illegal and besides bikes have a decree from THE QUEEN that says they're allowed to run you over if they want to whereas cars are evil and are technically disallowed by the second law of thermodynamics. I also don't give a fuck how you cycled on a pavement when nobody was there to see and therefore it can't have really been illegal, unless you also prove at the same time that you can SHUT THE FUCK UP in the woods when there's nobody there to listen to you.