Milton was educated at Street Paul"s School, London, and Gonville and Caius College, Cambridge, where he was Chairman of the Cambridge University Conservative Association and President of the Cambridge Union.
He lately served as London"s Deputy Mayor for Policy and Planning, and before that was a leader of Westminster City Council and Chairman of the Local Government Association. He started his working career in Sharaton"s, his father"s business, a chain of patisserie shops and bakers with about twenty shops in North London. The business was sold to Ponti"s on his father"s retirement.
He stood for Parliament unsuccessfully for the Conservative Party in Leicester East in the 1997 General Election.
With effect from 6 May 2008, Milton was appointed to the position of Senior Adviser, Planning, in the administration of London Mayor Boris Johnson. This led to his resignation as a councillor.
From September 2008 he became a full-time politician as the administration"s Deputy Mayor for Policy and Planning. In that role, he was responsible for overseeing policies for the built environment.
In June 2009, Milton was also appointed Chief of Staff to the Mayor, with responsibility for managing the Mayoral advisors, as well as the Greater London Authority budgets and administration.
Milton was diagnosed with leukaemia in 1990. In 1998 he underwent a bone-marrow transplant. As a result, his immune system was weakened, leading to a bout of pneumonia which seriously damaged his lungs.
His health never fully recovered.
Milton died on 11 April 2011, aged 49.
He was a member of the West London Synagogue.