Just having seen Hora's post
Which practically has dodgy written all over it, how do the police take people reporting suspicious stuff?
Short of someone going that's my bike is there anything they can do?
Kind of looking for a police perspective on this one, bike theft (anecdotally) seems to be on the rise and the values we are talking not must make it a serious amount of pounds worth being stolen.
Perhaps the other approach is a site to upload your stolen bike to and then let people submit an add with similar tags - Brand, Model, Extra Kit - get a 70% match and you get emailed the link?
Removing the ability of the thief to move the bike on for quick cash might also help with the problem.