The Saudi tycoon at the centre of an honours controversy

Businessman and philanthropist Mahfouz Marei Mubarak bin Mahfouz awarded CBE by Prince Charles in 2016

The son of one of Saudi Arabia's richest men, Dr Mahfouz Marei Mubarak bin Mahfouz, has hardly any information listed about him on his charity's website, but has the honour of a wood, a fountain, a garden and a building named after him among some of Britain's oldest and most prestigious buildings.

The 51-year-old businessman and philanthropist has donated generously to Oxbridge colleges, as well as royal mansions Dumfries House and the Castle of Mey. The website for the Mahfouz Foundation, which he founded in 2012, shows simply a photo of Mahfouz, alongside his full name and list of honorifics.