He Who Dares: Downing Street Siege (2014)

Following his heroic actions in 'He Who Dares,' Christopher Lowe is summoned to 10 Downing Street to be dishonourably discharged from the SAS for disobeying a direct order, despite the fact that his actions saved the Prime Minister's only daughter. However, when kidnapper Alexander Holt escapes from prison and plots the kidnapping of the Prime Minister, only one man can stop him.