Career
Pigott was commissioned into the Royal Engineers in 1965. He was appointed Chief of Staff for the Allied Rapid Reaction Corps in 1992, Commandant of the Staff College, Camberley in 1994 and Director-General, Doctrine and Development in 1997. From 2000 he served as Deputy Chief of the Defence Staff (Commitments) with responsibility for planning and executing the invasion of Afghanistan.
He retired in 2003.
On 4 December 2009, Pigott gave evidence to The Iraq Inquiry.