Peter Till read English literature at Cambridge University (1964–67). Started making drawings at university and sold some to OZ magazine in 1969. Whilst writing and performing in the Flies Revue, a theatre group, he continued to make illustrations for a variety of clients - mostly the underground press. Made an animation, The Running Man, which was part of a Flies Revue show at the Cockpit Theatre in London in the early 1970s. Gradually the illustration side of his activities began to take precedence and his clients included The Radio Times, The Sunday Times and The Observer. In 1979 he made a short animated film, The Beard, that went on general release with a number of feature films.
In 1979 he formed The Rhumba Brothers and released a record on Big Beat Records. By now he was working for all the English broadsheet newspapers (and some of the tabloids).
He illustrated The Emperor of the United States and other Great British Eccentrics (1981) and campaigns for London Transport, Barclays Bank, etc. He has featured in numerous group exhibitions and won the V&A Museum Illustration Award (2005). He contributes a weekly illustration to the Guardian and has designed a set of six postage stamps for the Royal Mail.