Pavement cyclists beware

2: Is there a real problem if I unclip and roll over the footbridge, I have brakes, and I can put my feet on the floor, I am going at walking pace and I am in full control?

I was cycling down Whitehall the other day towards Trafalgar square and clocked this copper on his bike talking to a colleague near the cenotaph. The traffic wasn't moving much and he gets on his bike and comes in on my inside up to the first set of lights heading that way, which are on red, allowing traffic to filter in from the right. The copper then half dismounts, left foot in, right foot out and over scooter style, and goes through the red light, joins the stream of traffic, and throws his leg back over and starts pedalling.