Lyons continued to work productively with Raglan to improve supply arrangements in the Bosphorus and at Balaklava. Lyons secured another diplomatic triumph when he secured, in May 1855, French consent to capture of Kerch and occupation of the Sea of Azov: this operation destroyed the logistic support of the Russian army in the Crimea and enabled the allied victory. In June 1855, Lyons lost both his own son, Captain Edmund Moubray Lyons, of the Royal Navy, (1819–1855), who had been severely wounded in a night attack on Sevastopol, and his close friend and colleague Lord Raglan. After the fall of Sevastopol, Sir Edmund Lyons led a successful expedition to capture Kinburn on 17 October 1855, which opened up the Bug and Dnieper rivers for allied operations. This was the first military action to involve the use of armoured warships. In July 1855, Lyons, who had already received the honour of Knight Grand Cross of the Civil Division of the Order of the Bath, received the honour of Knight Grand Cross of the Military Division of the same order. He is one of few persons to have attained the rank of Knight Grand Cross in both divisions of the Order. In January 1856, Lyons attended the allied Council of War at Paris and advocated increased aggression. After the Treaty of Paris, he relinquished his post of Commander in Chief of the Royal Navy in the Mediterranean. When he returned to London, a Grand Banquet was hosted for him at the Mansion House, London and he was awarded the Freedom of the City of London on 24 May 1856. Lyons’s contribution to the Crimean War was imperative to the allied success. He was largely responsible, at the allied council of war, for the decision to attempt the operation. He transported the British Army to the Crimea and subsequently ensured its supplies and supported it militarily on land, where he led assaults, including the Kerch operation. His friendship with Lord Raglan enabled the coordination of the British Army and Navy, the officers of both of which were endeared to his charisma. Already a baronet, he was created a Baron, Baron Lyons of Christchurch, and raised to the peerage on 23 June 1856. He entered the House of Lords between Admiral George Byron, 7th Baron Byron and Thomas Foley, 4th Baron Foley. He was promoted to Vice-Admiral on 19 March 1857 and held the temporary rank of Admiral from December 1857 until his death. He returned to Britain in 1858, and escorted Queen Victoria to Cherbourg in August 1858.