If they had committed a less sophisticated crime they probably would have because in the UK there is a lot of crime that goes completely uninvestigated by the police. For example if they had gone out and stolen a motorcycle, even if that bike was fitted with a tracker that would give the police a lead as to where they were taking the bike to remove the tracker, the police would (at least in my area) not even investigate. As in just give the poor ex-bike owner a crime number for insurance via email and not visit or follow anything up at all.[1]

[1] Source: I am that poor ex-bike owner and I know anecdotally my experience is not unusual. I live in a nice area and a person in my neighbourhood had the steering wheel of their car stolen (for some reason) again, the police did nothing.