Rob Archer wrote: I suppose I'm asking is it worth breaking the law for?
Ultimately that decision is yours and yours alone, just remember this: In the infamous Charlie Alliston case the police used his social media posts against him. You've just gone on public record stating that you both know what the law is and that you're prepared to break it for personal gain.
Now, in practice the odds of the Police pulling you over for a 'just a routine check sir' are slim, and even slimmer are the odds of a that PC knowing the fine details of e-bike laws, but, and this is the big but, you have an incident that warrants their full investigative powers and the law could come down on you like a ton of bricks. The points and a fine may not bother you, but driving without insurance is a Criminal Offence and could haunt you for years. It also goes on the CRB records and that may affect you chances of getting certain types of job.
As roubaixtuesday said: . . . . . . ^