Secret aircraft at Croydon airport

Hi all, I have recently been researching a myth I heard about a few years ago

http://www.croydonguardian.co.uk/news/heritage/3565445.Is_perfume_warehouse_hiding_secret_aircraft_/

I was once told that in a warehouse at Croydon airport, at the Bourjois factory, that a plane crashed into the building. To this day, the pilot and the aircraft are still burried in the walls and can’t be removed due to the dangers to the buildings structure. Does anyone have any info on this?

Many Thanks

Gavin