6. Mahdi al-Tajir – £1.687 Billion
Mohammed Mahdi Al Tajir is a Bahraini-Emirati businessman based in the United Kingdom. He was the first United Arab Emirates ambassador to the United Kingdom and non resident ambassador to France.
Al Tajir made his wealth from investing in metals, oil and water. He saw an increament in wealth by £18 making him 6th richest person on the list with networth of £1.687 Billion.