The Cairo Fire resulted in the dismissal of Nahhas Pasha and the formation of a new short-lived government headed by Ali Maher Pasha. The new government decided to send an official Egyptian delegation to the funeral of King George VI as a reconciliatory measure towards the United Kingdom. Amr Pasha was dispatched to London in his capacity as ambassador, along with Prince Muhammad Abdel Moneim, in order to attend the funeral, which was held on 15 February 1952. Nevertheless, Amr did not present new letters of credence to the new British sovereign, Queen Elizabeth II. The Maher government had to address two major national issues: the departure () of British military forces from the Suez Canal zone, and the unification () of Egypt and Sudan, which had hitherto been jointly administered by Egypt and the United Kingdom as a condominium. As a result, Anglo-Egyptian talks about negotiations were conducted, in which Amr Pasha played a major role. As Egypt's ambassador to the United Kingdom, he shuttled between London and Cairo trying to convey the Egyptian position to British politicians, notably Foreign Minister Anthony Eden, and then advise Egyptian leaders on the response. After the fall of the Maher government and its replacement by that of El-Hilali Pasha, the first official negotiating meeting took place on 22 March 1952. Amr was part of the Egyptian negotiating team, which also included El-Hilali Pasha himself as well as Foreign Minister Abdel-Khaleq Hassouna Pasha. The British side refused to commit itself publicly to "the principle of evacuation" before the start of the negotiations. The day after the official start of the negotiations, the Egyptian Parliament was dismissed. New elections were scheduled for 18 May, and martial law was extended indefinitely. The extreme political instability Egypt was witnessing at the time resulted in a military coup on 23 July 1952. After King Farouk's abdication in favor of his infant son Fuad II, the new Regency Council forced Amr into retirement at the end of August of the same year, replacing him as ambassador in London by Mahmoud Fawzi.