A funny but yet sad Google Web Search Help thread reports a person receiving phone calls from people looking for taxi service. In short, if you search for [taxi in postcode CT3] in Google UK up comes taxi results from Google Maps. But the number listed at the top of the page is of someone’s home, who has nothing to do with the taxi service.
The person said in the thread:
The interesting thing is that this is an owner verified listing and thus the phone number was entered by the business owner.
Forum discussion at Google Web Search Help.