Lieutenant General Sir Simon Vincent Mayall, KBE, CB (born 7 March 1956) is a retired British Army officer and a Middle East Adviser at the Ministry of Defence.

[2] After that he completed a Defence Fellowship at St Antony's College, Oxford studying Turkish security policy.

[1] He then became Commanding Officer of 1st The Queen's Dragoon Guards in 1997,[2] in which capacity he was deployed to the British Army Training Unit Suffield and to Northern Ireland.

[4] Mayall was the Deputy Commanding General of the Multi-National Corps – Iraq in late 2006 and early 2007,[2] for which he was awarded an Officer of the Legion of Merit by the United States.

[8] He was replaced in that role by Lieutenant General Tom Beckett in late 2014,[9] having been appointed a Knight Commander of the Order of the British Empire in the 2014 Birthday Honours.