Magoo was previously Head of Knightsbridge School from 2006-2015 and Head of Garden House Boys' School from 2000 - 2006. He was educated at Eton College and the Royal Military Academy Sandhurst (RMAS) before being commissioned in the Coldstream Guards.
During his military career Magoo served in the UK, Belize, Spain, Cyprus and Germany and was latterly Adjutant of the battalion in Bosnia. He was Aide de Camp to Lieutenant General the Hon Sir William Rous for two years and Coldstream Equerry to Her Majesty Queen Elizabeth II for two years.
As Principal, Magoo oversees the KS Brand , the KS extra-curricular provision for children/parents and staff (80+ clubs, week-end activities and holiday activities) as well as the Alumni.
Magoo is a keen sportsman and sports fan and lists other interests as "children, travel, public speaking/entertaining, writing children’s stories and his family". Magoo is the founder of Knightsbridge School and created the KS Code which concentrates mainly on the military pseudonym ‘Keep It Simple’.