So I've made my mind up I'm following Colin's lead and ordering some black carpet, James Paddock seem to be good on price, as well as the rubber mat. Next how to fit. The PO had Jigsaw spray the boot floor with underseal, I think he wanted it to look like a rally car, so the surface is not flat. I don't want to drill any holes for fixing and obviously need to lift it up to access the spare wheel. My guess is with the weight of some essential boot stuff the trimmed to fit carpet will not move? What to do about the seat back? Make that a separate part?
Iain