[mike_newcomb]

Hi Jaded,

if Unabridged is correct, there is a good chance you will find such items at a car boot sale in a less well off location, such as Brick Lane, Battersea or Wimbledon.

I note your location, but have given London locations as examples as these are ones I know.

Possibly more detail and photos of the socket/appliance would help.
e.g Similar plugs were used on kettles, some with an earthing contact strip on the outside.

Please advise back on progress.

Good Luck - Mike