According to the groundtrack on flightradar24, a 737 successfully landed halfway between Coventry and Birmingham airport a week or so ago.
Maybe something to do with the interface between flightradar24 and google maps, but it does indicate you can't always take things as they are seen.
I also thought that it was NOT radar data, but ADS-B transponder data.
I think it is more of a hobby interest site than something to be relied on in times of problems.