For 5 days in May 1980, the world watched as the SAS performed a daring raid on the Iranian Embassy in London.

Hailed by Margaret Thatcher as "a brilliant operation'' the raid was a huge success for the SAS, rescuing 19 hostages with near-perfect military execution, although 2 hostages were killed by terrorists. Despite the media attention, details of the siege are still largely unknown and those involved and the identities of the SAS troopers themselves, remain a closely guarded secret.

This book takes an in-depth look at the siege, revealing the political background behind it and analysing the controversial decision by the Prime Minister to sign over control of the streets of London to the military. Artwork illustrates the moment the walls were breached and show how the strict planning of the operation was critical to its success.

With input from those involved in the mission, the author strips away some of the mystery behind the best counter-terrorism unit in the world and their most famous raid.