Principal cast members for the film include Louise Delamere, Alastair Galbraith, Waleed Elagdi, Martin Savage, Koel Purie, Helen Schlesinger, Ewan Stewart and Paul Antony-Barber.

Despite the efforts of Ives, Drummer, and Habibullah who detain some members of the terror cell, the terrorists successfully detonate one of the dirty bombs in front of Liverpool Street station, causing mass death and destruction, as it releases a large cloud of radiation over the City of London.

Back at The City of London, Emergency Services setup decontamination units but find themselves overwhelmed by large, angry, and fearful crowds eager to exit the hot zone.

However, radiation levels continue to surge and spread outside The City and into the surrounding neighborhoods of the East End, prompting the Emergency Services to pull back and evacuate, further enraging the growing crowds.

Murray, frustrated at the lack of support and wanting to continue to fight the fires and help survivors, defies the evacuation order, removes his suit, and stays behind.

Liz visits Murray in the hospital where she learns that he was exposed to large doses of radiation that may lead to major health problems for him in the future including cancer and loss of fertility for herself.

A radio broadcast states that over 300 people were killed in the attack and that due to the high levels of radiation released, parts of the City of London will remain closed for up to 30 years as the local economy begins to suffer.