Well pleasantly surprised, both backing splash plates available to order from main dealer, £35.22 inc vat each.
So a trip tomorrow to order these.
I can knock most things up in most metals but at this price it isn't worth trying.
Part numbers used from 7zap and Left shield......8A0 615 311 B
right shield....8A0 615 312 B are the ones listed for me.
Never even thought about main dealer due to the cars age, Coupe 1991 2.3 20v 7a, cheers for the reminder Mark.