[1] He continued on to Watford College of Art and Technology and briefly studied at the Sorbonne in Paris.
He regularly devises political advertising campaigns for the Conservative Party, and created the "demon eyes" caricature of Tony Blair.
[10] His campaigns for Schweppes and the launch of Cosmopolitan magazine in the UK earned him international recognition with two Gold Lions at the Cannes Advertising festival.
[21] The thesis of Sinclair's book is to strip creative thought back to ensure that advertising campaigns have maximum impact in their simplicity.
[25] Sinclair was appointed Commander of the Order of the British Empire (CBE) in the 2017 New Year Honours for services to advertising.