looked at a you tube video (how secure is your bicycle lock) it took about 90seconds with angle grinder to cut through decent locks but this was in a studio rather than outside I believe.
watched bbc1 thief trackers where they put a tracker on a bike,secured to railings with a decent chain and lock, was wrenched from railings by a fat schoolboy in 10seconds, not sure if lock had already been tampered with though.
I went into Santander Aviva are there insurance underwriters
Ive just switched my house insurance to Bradford & Bingley to cover my ebike.
Initially they said they don't cover bikes with motors, but when I explained details of the motor and it being pedal assist she went away to discuss it with someone and came back saying they would provide cover.