Just to update my original post - I actually have 8 boxes of these washer fixings. I also found the receipt and they cost me £170. I'd be happy to see them used so would send for not much more than the cost of postage if you want to make me an offer.... they are described as follows:

"The holder is designed for anchoring lightweight insulation systems with insulation boards made ​​of polystyrene and mineral wool on wooden boarding, chipboard and corrugated sheet metal:

anchoring in wood, particle board and corrugated sheets
embedment depth from 20 to 40 mm
Plate diameter 65 mm
polyethylene plate material
screw with a drill tip EJOT Climadur Dabo SW 8 R allows direct mounting without pre-drilling
plate design ensures a reliable connection with render"

You can email me if you like - 'tom' then the at sign then 'susweb.net'