The previous year offshore wind had delivered £10.6m to the Crown Estate's coffers.

“Basically we have had a really good year in all three core performing areas of our business – in energy infrastructure and the two more traditional areas of real estate,” Rob Hastings, the organisation's director of energy and infrastructure, tells Recharge.

“With offshore wind we are projecting a continuous ‘quite solid’ 10% per annum growth through to 2020.