[1] When Mitchell was working as a shop manager for Acme Comics in Coldharbour Lane in Brixton, South London,[2] in 1988, he met Pat Mills.
In Crisis, a political comic from Fleetway, Mitchell worked on Books 2 and 3 of Third World War.
The story covered issues including matriarchy, police racism, no-go areas, private police forces, class war, and black resistance.
[3] Mitchell also wrote the Amnesty International story "Prisoner of Justice" with artist Glenn Fabry.
Mitchell partnered Mills in the first ABC Warriors novel The Medusa War for Black Library based on elements changed or removed from the scripts.