The son of a diamond merchant, Weiss failed his 11 plus exam on the day King George VI died.Rainbow George confirmed he celebrated his 80th Birthday on the 13 October 2020 on the BBC Radio 5 Live, overnight show, when he called into the Presenters Dotun Adebayo show, from his retirement home in Highgate, London at 02.52am, 25 November 2020. He subsequently worked for his father in Hatton Garden for 15 years. He admitted to enjoying gambling too much, after it became legal to bet on the high street on 1 May 1961. He was a long time Newcastle United supporter since the 1952 FA Cup Final. Later in life, he very nearly recruited their former striker, Jackie Milburn, to stand for his Captain Rainbow's Universal Party in 1985 in Tyne Bridge.
