Novels:

• Toady (1989)
• Stitch (1991)
• The Immaculate (1993)
• The Secret of Anatomy (1994)
• Mr. Bad Face (1996)
• Longbarrow (1997)
• Genesis (1998)
• Fiddleback (2001)
• Nowhere Near An Angel (2005)
• The Deluge (2007)

Novellas:

• The Dogs (2001))
• The Uglimen (2003)
• Stumps (2008)
• It Sustains (2009)

Collections:

• Close To The Bone (1995)
• Voyages Into Darkness (with Stephen Laws)
• Long Shadows, Nightmare Light (2009)

As Editor:

• Cinema Macabre (2006)
• Cinema Futura (2009)

Doctor Who:

• The Bodysnatchers
• Deep Blue
• Forever Autumn
• Ghosts Of India

Torchwood:

• Bay of the Dead

Mark began his writing career in 1988 as part of the (now defunct) Enterprise Allowance Scheme, which was at that time paying claimants £30 a week to be self-employed. His first novel, Toady, was published in 1989 (re-titled The Horror Club and shortened by ? for the US market) and several further books followed: Stitch, The Immaculate, The Secret of Anatomy, Mr Bad Face, Longbarrow, Genesis and Nowhere Near an Angel. Before 'Toady' he had written a novel called 'The Winter Tree', which was rejected by publishers by at least gained him some familiarity with them. In addition to his major works, Morris has published the novellas The Dogs (for Barrington Stoke, an imprint for 'reluctant readers') and The Uglimen.

He has also published two volumes of short stories, Close to the Bone and Voyages into Darkness (with Stephen Laws) and a novel as "J.M. Morris": Fiddleback (which was re-named The Lonely Places and had a slightly longer epilogue for the US market, which the author claims was "in order to (quote from US editor): 'clarify matters for a US readership.'"). A further collection of short fiction, 'Separate Skins' was due for release from British small press publisher Tanjen, but the publisher went out of business around that time and the book - introduced by Graham Joyce - remains unpublished.

A fan of Doctor Who since being terrified by the show as a child, Mark has so far written 4 books for the BBC, as well as 1 of the Doctor Who spinoff Torchwood: The Body Snatchers for BBC Books' Eighth Doctor Adventures range, and the novel Deep Blue for their Past Doctor Adventures range, Forever Autumn and Ghosts of India as part of the New Series Adventures range, with the Torchwood novel Bay of the Dead being released on 29 May 2009.

The novel 'Nowhere Near An Angel' was intended to be his second J. M. Morris novel for Macmillan, but they rejected it as they considered 'J. M. Morris' to be a female writer ('Fiddleback' was written from a female point of view), despite Mark's publicity appearances for the novel. 'Nowhere Near An Angel' was published by P. S. Publishing, and no further J. M. Morris novel are planned.

His early influences include British horror writer Ramsey Campbell and American horror writer Stephen King, though the tone of his early novels also led people to believe he would be the next Clive Barker. Morris met Campbell in Birmingham in 1986, and the older writer offered advice and the two later became friends.

He is currently published by the small press publishers PS Publishing and Humdrumming, Ltd., who are planning to reissue each of his early horror novels in new hardback additions with bonus material. His next novel will be the American-published 'The Deluge', in Winter 2007.

Mark's work in the literary field are not limited to writing, as he also works in the retail sector for Borders in Leeds.