That was an epic out come
"By the sixth day of the siege the gunmen had become increasingly frustrated at the lack of progress in meeting their demands. That evening, they killed one of the hostages and threw his body out of the embassy. As a result, the British government ordered the Special Air Service (SAS), a special forces regiment of the British Army, to conduct an assault to rescue the remaining hostages. Shortly afterwards, soldiers abseiled from the roof of the building and forced entry through the windows. During the 17-minute raid, the SAS rescued all but one of the remaining hostages, and killed five of the six terrorists. The soldiers subsequently faced accusations that they unnecessarily killed two of the terrorists, but an inquest into the deaths eventually cleared the SAS of any wrongdoing. The remaining terrorist was prosecuted and served 27 years in British prisons."
They resolved the situation within minutes.
I must say, Thatcher, love or hate her had more balls than any other PM we ever had.