At Chelsea, Kohn was taught by Edward Wright, Dennis Bailey and Susan Einzig and became friends with part-time tutor, the Scottish surrealist poet and musician Ivor Cutler.

[4] He worked initially with the Diagram Group, a London-based cooperative group of designers (which included the brilliant avant-garde composer and musician, Cornelius Cardew), writers, artists and editors, led by Bruce Robertson and Bob Chapman, supplying visualised information to publishers in Britain and the United States; and was Art Editor on the definitive encyclopedia Musical Instruments of the World.,[5] which featured in Eduardo Paolozzi's 1985 "Lost Magic Kingdoms" exhibition at the Museum of Mankind in London.

He travelled to various locations in Europe and North America, with Gillespie and Shane Brennan of Moondance Productions; conducted interviews and took many of the photographs that illustrate the biography.

Amongst other work Kohn has undertaken filmography on Verónico Cruz and designs and produces the publicity material for African Revival[12] a UK-based charity that provides Aid to 'self-sustaining projects' in Sudan, Uganda, Kenya, Malawi, Mozambique, South Africa and Zambia.

He is product designer for Fruity Faces,[12] the Dragons' Den fruit case manufacturer that encourages healthy eating and gives its profits to charity.