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LesterBee, I think that is the one, have only seen it in car parks and urban landscaping, but that looks spot on. Hadn't realised it grew so large though, the trees here locally must be very young. Thank you.
Ironically the original tree I bought my sister was a purple leaved ash and it died.
She has since planted a Robina to replace it which is now also dying, its likely there is something wrong with soil in that area she is using , and needs a soil test. Thanks again, now to find a specimen that she can plant elsewhere in her garden.