In reply to PanzerHanzler:
Had an update from the local police, they confirmed that would not check online resources such the bike register and have no national database for stolen bikes themselves to check against.
Seem a bit crappy - the online frame number check would take seconds for a recovered bike.
So if the hypothetical situation arose where a person purchases a stolen/recovered bike from the police and the original owner sees it can that owner still lay claim to it / recover it? Referring to the above could it be argued that the police have did not reasonable steps (an online check against a UK wide database being a reasonable expectation of the boys in blue)...
If the police can't / won't do it would they allow volunteers from local cycle clubs to do it for them or indeed is there such a scheme already on the go anywhere?