The recipient of many awards, Dickinson has been shortlisted nine times for the prestigious Carnegie Medal for children's literature and was the first author to win it twice. The author of twenty-one crime and mystery novels for adults, Dickinson was also the first to win the Gold Dagger of the Crime Writers' Association for two books running: The Glass-Sided Ants' Nest (1968) and The Old English Peepshow (1969).
A collection of Dickinson's poetry, The Weir, was published in 2007. His latest book, In the Palace of the Khans, was published in 2012 and was nominated for the Carnegie Medal.
Dickinson has served as chairman of the Society of Authors and is a fellow of the Royal Society of Literature. He was made an Officer of the Order of the British Empire in 2009 for services to literature.