Just spoken to my neighbour who is a member of the BSMEE and he said they get what is bagged as Welsh steam coal, he thought from a guy in Gloucester. He said the truck delivers about a ton once a year. He seemed to think there is a pit still mining the stuff. He also mentioned that it's advertised in Model Engineering and found the advert for one supplier is Signal Fuels snipped-for-privacy@hotmail.co.uk .