Near here at Fallow Corner stood the home of Joseph Grimaldi actor and famous clown (1779-1837)

John Keogh on Flickr
This is an approximate position

in the grounds of Finchley Memorial Hospital, Granville Road, Finchley, London
[geolocate this address]
Google Streetview

by London Borough of Barnet

Colour: blue

Wikimedia:

Flickr:

See also...
Esther Simpson on Flickr
bardwellpeter on Flickr CC0