Here in London we have cycle paths, but it's also the reality that cyclists will as a normal thing cut through pedestrian areas they are not really allowed in whereas a motorcyclist doing so would be quite likely to get tracked down via CCTV and fine.

For example, there is a sort of 1 way system around Liverpool Street Station, and a motorbike will sit in the permeant traffic jam just like a car, spending 10 minutes crawling around it. A cyclist, or an e-bikist, will cut through the market square outside Spitalfields market to the other side. Google maps will tell them to do it. That is not a legal cycle path.

You will do a lot of stuff on an e-bike that you wouldn't feel right doing on a motorbike.

Well, as long as it is illegal that means it must NEVER happen?

Many things are illegal, yet still available for sale. Just look at the whole "performance parts" market which bypass EPA regulations as a small example.

Or... if you want another example the Reliant Robin.. Designed to get around license/insurance requirements. A car which you only needed a motorcycle license to drive?

Really? I'm in the U.S. and the only place bikes are explicitly illegal is on the highways. Maybe I'm wrong, but I thought bikes could take city streets and follow the rules of the road like everyone else. If there's a bike lane, use it, but otherwise behave mostly like a car (maybe giving cars a wide berth to pass you).