John Christodoulou
Rank 2017

Limassol-born property entrepreneur Christodoulou, 52 later this month, fled the 1974 Turkish invasion of Cyprus with his family, who settled in London, where he trained as a diamond mounter and bought his first building in 1994. Net assets at his London-based Yianis Holdings stood at £531.4m in 2015-16. It is the second largest freeholder at Canary Wharf, with 2m sq ft, including two five-star hotels. He also has 2,000 residential and commercial freehold units in central London. Other interests include Liverpool's Radisson Blu and Manchester's Hilton Tower, one of the tallest residential hotel buildings in Europe.