Education
Collis was educated at King Edward VII School, Sheffield from 1967 until 1973 and at Christ"s College, Cambridge.
Collis was educated at King Edward VII School, Sheffield from 1967 until 1973 and at Christ"s College, Cambridge.
He has held posts in Bahrain, Tunisia, India, Jordan, Dubai, and Basra. He was Consul General in Basra between 2004 and 2005. He was British Ambassador to Qatar 2005-2007, and British Ambassador to Syria 2007–2012.
He left Syria in February 2012, after the British Government withdrew their staff there.
He was British Ambassador to Iraq from 2012 until September 2014. He presented his credentials as British Ambassador to Saudi Arabia on 3 February 2015.