Sergeant Thomas "Mac" McAllister is soldier in the British Army who had a promising career until he assaulted a senior officer. The only survivor of a disastrous mission to render the terrorist Omair Idrisi, he was due to be court-martialed until the revived Section 20 reassigned him. He is initially partnered with Wyatt, whom he initially finds to be irritating, but the two gradually develop camaraderie.
Appearances
Strike Back
Main cast, played by Warren Brown
- Episode 6x01: Retribution: Episode 1 (Oct 31, 2017)
- Episode 6x02: Retribution: Episode 2 (Nov 7, 2017)
- Episode 6x03: Retribution: Episode 3 (Nov 14, 2017)
- Episode 6x04: Retribution: Episode 4 (Nov 21, 2017)
- Episode 6x05: Retribution: Episode 5 (Nov 28, 2017)
- Episode 6x06: Retribution: Episode 6 (Jan 31, 2018)
- Episode 6x07: Retribution: Episode 7 (Feb 7, 2018)
- Episode 6x08: Retribution: Episode 8 (Feb 14, 2018)
- Episode 6x09: Retribution: Episode 9 (Feb 21, 2018)
- Episode 6x10: Retribution: Episode 10 (Feb 28, 2018)
- Episode 7x01: Silent War: Episode 1 (Jan 25, 2019)
- Episode 7x02: Silent War: Episode 2 (Feb 1, 2019)
- Episode 7x03: Silent War: Episode 3 (Feb 8, 2019)
- Episode 7x04: Silent War: Episode 4 (Feb 15, 2019)
- Episode 7x05: Silent War: Episode 5 (Feb 22, 2019)
- Episode 7x06: Silent War: Episode 6 (Mar 1, 2019)
- Episode 7x07: Silent War: Episode 7 (Mar 8, 2019)
- Episode 7x08: Silent War: Episode 8 (Mar 15, 2019)
- Episode 7x09: Silent War: Episode 9 (Mar 22, 2019)
- Episode 7x10: Silent War: Episode 10 (Mar 29, 2019)
- Episode 8x01: Vendetta: Episode 1 (Feb 14, 2020)
- Episode 8x02: Vendetta: Episode 2 (Feb 21, 2020)
- Episode 8x03: Vendetta: Episode 3 (Feb 28, 2020)
- Episode 8x04: Vendetta: Episode 4 (Mar 6, 2020)
- Episode 8x05: Vendetta: Episode 5 (Mar 13, 2020)
- Episode 8x06: Vendetta: Episode 6 (Mar 20, 2020)
Guest cast, played by Warren Brown
- Episode 8x08: Vendetta: Episode 8 (Apr 3, 2020)