Yeee haaaaa.
Thank you DenCill, i'm just surprised really as all the dealers were crowded around the table looking at everything but that ruby tray. After spotting it I had a little bit of difficulty reaching for it. It was like watching Medusa with all the arms outstretched trying to pick things up. :shock:
My mum bought me this today.

It's just under 5.50 inches wide and just under 14 inches across. Nearly 1 inch high.
Grantleigh pattern, I think.
The Portmeirion plate is printed on the back but it doesn't have that white background like the one on the Grantleigh dish/plate.