I cannot see anything in BS1361-1 that forbids such a setup.
"Plastic earth pins" are allowed (not could be :) ), BS1361-1 calls them insulated shutter opening devices (ISODs).
Cheers
Forgive my ignorance here. On the web site you linked to there are a couple of moulded plugs with sleeved earth pins. These are supplying 2 core cable and therefore no earth. So what is dangerous about these examples?
