The song about Mr Harding is called 'A proper sort of Gardener' and is on Maggie's 'Down to the Bone Album'. According to the sleeve notes Mr Harding's garden was in Alton, Hants on a site which is now a Bass beer factory. I havn't heard 'A place called England' but listening to 'Proper sort of Garden' would probably best explain the 'A Mr Harding sort of England' line.

Chris