This is a funion. I've not seen one before. It's a screen Printed and hand coloured dish from the early 1960's. It has the 1959-67 stamp with Brownsea Castle marked also.
I went to Brownsea Island by ferry from Poole harbour a couple of years ago to see red squirrels. Saw one squirrel and lots of wading birds, but don't remember seeing peacocks. Anyway they must have been there in the 60's. Another from Ebay last week.