Needs some extra details and updating –  the contributions to the Oxford and Bloomsbury Companions are missing.

• ‘Strange Boys, Queer Boys: Gay Representations in Young Adult Fantastic Fiction’, Gender and Sexuality in Contemporary Popular Fantasy: Beyond Boy Wizards and ‘Kick-Ass’ Chicks. Edited by Jude Roberts and Esther MacCallum-Stewart, London: Routledge, 2016.
  
• ‘The British Science Fiction Short Story’, The Cambridge Companion to the English Short Story. Edited by Ann-Marie Einhaus, Cambridge: Cambridge University Press, 2016.
  
• ‘Sleeping/Waking: Politicizing the Sublime in Science Fiction Film Special Effects’. Endangering Science Fiction Film. Edited by Sean Redmond and Leon Marvell, New York and London: Routledge, 2016: 117-31.

• ‘Human Subjects/Alien Objects? Abjection and the Constructions of Race and Racism in District 9’, Alien Imaginations: Science Fiction and Tales of Transnationalism. Edited by Ulrike Küchler, Silja Maehl and, Graeme Stout, New York: Bloomsbury, 2015: 95-112.
• ‘Bearly Conscious? Deconstructing Pullman’s Postmodern Marionettes’, Philip Pullman. Edited by Catherine Butler and Tommy Halsdorf, London: Palgrave Macmillan, 2014: 96-112.
• ‘Futurology.’ The Oxford Handbook of Science Fiction. Edited by Rob Latham. Oxford: Oxford University Press, 2014.
• ‘Science Fiction Criticism.’ The Science Fiction Handbook. Edited by Nick Hubble and Aris Mousoutzanis. London: Bloomsbury, 2014.
• ‘Unimportant Failures: The Fall and Rise of The Man Who Fell to Earth’, Science Fiction Across Media: Adaptation/Novelisation. Edited by Thomas van Parys and I.Q. Hunter, Canterbury: Gylphi, 2011.
• ‘Psychoanalysis and the Fantastic.’ Modern Fantasy Literature. Edited by Edward James and Farah Mendlesohn. Cambridge: Cambridge University Press.
• ‘If None of this is Real, How Should We Treat Other People?’ Philip K. Dick and Philosophy, ed. D.E. Wittkower, 2011.
• ‘The Man Who Fell To Earth: The Messiah and the Amphicatastrophe.’ Heroes, Monsters and Values: Science Fiction Films of the 1970s. Edited by Michael P. Berman and Rohit Dalvi. Newcastle: Cambridge Scholars Press, 2011.
• ‘Postmodernism, Postmodernity and the Postmodern: Telling Local Stories at the End of Time.’ Teaching Science Fiction. Edited by Andy Sawyer and Peter Wright. London: Palgrave-Macmillan, 2011.
• ‘Journeys Beyond Being: The Cyberpunk-Flavored Novels of Jeff Noon.’ Beyond Cyberpunk: New Critical Perspectives. Edited by Sherryl Vint and Graham Murphy. New York: Routledge, 2010: 65-78.
• Essays on ‘Iain M. Banks,’ ‘Jean Baudrillard,’ and ‘Philip K. Dick.’ Fifty Key Figures in Science Fiction. Edited by Mark Bould, Andrew M. Butler, Adam Roberts and Sherryl Vint. London: Routledge, 2010: 17-22, 22-26, 66-70.
• ‘Medusa Laughs: Birds, Thieves, and Other Unruly Women in the Works of Joanna Russ.’ On Joanna Russ. Edited by Farah Mendlesohn. Middletown, CT: Wesleyan University Press, 2009: 149-56.
• ‘Psychoanalysis.’ The Routledge Companion to Science Fiction Edited by Mark Bould, Andrew M. Butler, Adam Roberts and Sherryl Vint, London: Routledge, 2009: 288-297.
• ‘Music, Food, Sex.’ The Arthur C. Clarke Award: A Critical Anthology. Edited by Paul Kincaid with Andrew M. Butler. Everdon: Serendip Foundation, 2006: 141-151.
• ‘Purloining of an Agenda, Or, A Spectre is Haunting John Clute.’ Polder: A Festschrift for John Clute and Judith Clute. Edited by Farah Mendlesohn. Baltimore: Old Earth Books, 2006: 163-174.
• ‘The Republic of Heaven: The Betrayal of Philip Pullman’s His Dark Materials Trilogy.’ Children’s Fantasy Fiction: Debates for the Twenty First Century. Edited by Nickianne Moody and Clare Horrocks. Liverpool: ARPF/Liverpool JMU, 2005: 285-298.
• Entries on Comedy, Sexuality, Blade Runner, The Difference Engine, The Drowned World, E.T.: The Extraterrestrial, Galapagos, The Man in the High Castle, Metropolis, Total Recall, for The Greenwood Encyclopaedia of Science Fiction and Fantasy Themes. Edited by Gary Westfahl. Westport, CT: Greenwood Press, 2005.
• ‘Beyond Competing for Beer Money: The Criticism of Christopher Priest.’ Christopher Priest: The Interaction. Edited by Andrew M. Butler. London: SFF, 2005: 129-145.
• ‘William Gibson, Neuromancer.’ A Companion to Science Fiction. Edited by David Seed. Cambridge: Blackwells, 2005: 534-543.
• ‘“The Rumour is We’re Slaves”: Michael Coney’s Early Novels.’ Further Perspectives on the Canadian Fantasic: Proceedings of the 2003 Academic Conference on Canadian Science Fiction and Fantasy. Edited by Allan Weiss. Toronto: ACCSFF, 2005: 85-96.
• ‘Philip K. Dick, Do Androids Dream of Electric Sheep?’ The Popular & the Canonical. Edited by David Johnson. London: Routledge/Open University: 108-152.
• ‘Discontinuity and D. G. Compton’s The Continuous Katherine Mortenhoe.’ A Celebration of British Science Fiction. Edited by Andy Sawyer, Andrew M. Butler and Farah Mendlesohn. Guildford: Science Fiction Foundation, 2005: 67-75.
• ‘Theories of Humour.’ Terry Pratchett: Guilty of Literature. Edited by Andrew M. Butler, Edward James and Farah Mendlesohn. Baltimore, Maryland: Old Earth Books, 2004: 67-88.
• ‘Postmodernism and Science Fiction.’ The Cambridge Companion to Science Fiction. Edited by Farah Mendlesohn and Edward James. Cambridge: Cambridge University Press, 2003: 137-148.
• ‘Life, Liberty and the Pursuit of the Post-Human: An Interview with Ken MacLeod.’ The True Knowledge of Ken MacLeod. Edited by Andrew M. Butler and Farah Mendlesohn. Reading: SFF, 2003: 6-15.
• ‘Philip Pullman.’ Supernatural Fiction Writers. Edited by Richard Bleiler, Gale Research, 2002.
• ‘“My Particular Virus”: (Re)Reading Jack Womack’s New York Quintet.’ Speaking Science Fiction. Edited by David Seed and Andy Sawyer. Liverpool: Liverpool University Press, 2001.
• ‘Journeys Beyond Being: The Cyberpunk-Flavoured Novels of Jeff Noon.’ Novel Turns: Recent Narrative Writing From Western Europe. Edited by John Gatt-Rutter. Melbourne: Antipodas Monographs, 2001.
• ‘Theories of Humour.’ Terry Pratchett: Guilty of Literature. Edited by Andrew M. Butler, Edward James and Farah Mendlesohn, Reading: Science Fiction Foundation, 2000: 35-50.
• ‘Science Fiction Writing.’ Pears Cyclopedia. Edited by Chris Cook. London: Penguin, 1999: M33-35.
• ‘Science Fiction As Postmodernism: The Case of Philip K. Dick.’ Impossibility Fiction: Alternativity – Extrapolation – Speculation. Ed. Derek Littlewood and Peter Stockwell. Amsterdam and Atlanta GA.: Rodopi, 1996. 45-56.
• ‘Being Beyond the Body?: Neal Stephenson’s Snow Crash and Jeff Noon’s Vurt.’ Strange Attractors. Edited by Mark Bould. Plymouth: Mark Bould, 1995.
• ‘Reality versus Transcience: An Examination of Philip K. Dick’s Do Androids Dream of Electric Sheep? and Ridley Scott’s Blade Runner.’ Philip K. Dick: A Celebration Programme Book. Ed. Jeff Merrifield. Epping Forest College, Loughton: Connections, 1991.