Stolen bikes

I think there is some legal reason under UK law that means the popo cant lure people into crime.. or the evidence of baited theft cant be used in court.. im not sure. Someone will probably know better.

I'm not sure if there is any law prohibiting the issue of a severe kick to the balls over a baited bike...

Entrapment is what you're talking about, however if the person is ready and willing to break the law.

With that bike locked on just the seatpost, it's likely to be called an entrapment as it lure people who wouldn't otherwise steal bicycle to have a go (as other have said - opportunity thieves).

it's a bit of a fine line at time, is there's really a difference between a normal regular thieves and those who decided to steal because the opportunity present itself?