In 2019, it was reported that he had built a €730m stake in Heathrow Airport via a range of investment companies jointly taking a 4% stake in Spanish multinational Ferrovial.
In 2019 it was reported by the Daily Telegraph that Hohn had donated £50,000 to environmental activist group Extinction Rebellion, with a further £150,000 donated by the Children's Investment Fund Foundation. None of the Charity's money was spent on civil disobedience, it was claimed.