Thank you so much, Leanne. I have found an address in Whitepages and a phone number. There was not an e mail address so I will ring tonight (should be morning in Australia).
This will make an elderly, ill lady so pleased to know about her half brother and I hope to be able to obtain a photograph of Ian James Quin-Coles for her.
Once again my many thanks to you and all on Ancestry who have helped me. Best regards from Margaret