Andrew retired from the Royal Navy in 2017 in the rank of Commodore. During his naval career, he served in submarines and serving ships as a logistics officer, as well as qualifying as a barrister. As a more senior officer, he served ashore in a variety of posts including Head of Naval Legal Services and Commander of the Maritime Reserves. He was a co-founding trustee of the RNRMC in 2007 and remained a trustee until 2016.
After leaving the Royal Navy, Andrew became the Global HR Director of an international law firm based in the City, and latterly Head of the London office. He was re-appointed as a trustee in 2019 and he chairs the Strategic Funding Committee.