Chris Hormann’s review published on Letterboxd:
A dramatisation of the Iranian Embassy siege in London in 1980, this plays things pretty straight, albeit the lion's share POV is from the Western perspective, where it would have been great to have had additional focus on the gunmen who stormed the Embassy. There are some brief moments between Mark Strong (the chief negotiator) and Aymen Hamdouchi as the lead gunman but we hear little of his or his cohorts' background. The final assault is tense and well choreographed so that the final outcome (while it may exist in history) is still in doubt right until the end.