The Brighton hotel bombing happened on 12 October 1984 at the Grand Hotel in Brighton. The bomb was planted by the Provisional Irish Republican Army (IRA) member Patrick Magee, with the intention of assassinating Prime Minister, Margaret Thatcher and her cabinet who were staying at the hotel for the Conservative Party conference. Patrick Magee had stayed in the hotel under the false name of Roy Walsh during the weekend of 14–17 September 1984. During his stay, he planted the bomb (fitted with a long-delay timer made from video recorder components) under the bath in his room, number 629.
The bomb detonated at 2:54 a.m. on 12 October. Margaret Thatcher was still awake at the time, working on her conference speech for the next day in her suite. It badly damaged her bathroom, but left her sitting room and bedroom unscathed. Both she and her husband Denis escaped injury. She changed her clothes and was then escorted out of the rear of the hotel by the security guards and driven to Brighton police station. She and her husband were then taken to Sussex Police Headquarters at Lewes, where they stayed for the rest of the night.
"Mrs. Thatcher will now realise that Britain cannot occupy our country and torture our prisoners and shoot our people in their own streets and get away with it. Today we were unlucky, but remember we only have to be lucky once. You will have to be lucky always. Give Ireland peace and there will be no more war."
Margaret Thatcher began the next session of the conference at 9:30 a.m. the following morning as scheduled. She omitted most of her planned attacks on the Labour Party from her speech and claimed the bombing was "an attempt to cripple Her Majesty's democratically elected Government":
"That is the scale of the outrage in which we have all shared, and the fact that we are gathered here now—shocked, but composed and determined—is a sign not only that this attack has failed, but that all attempts to destroy democracy by terrorism will fail."