Work under way to demolish entire East Wing as president upped cost of new structure from $200m to $300m

The White House has revealed that major companies in the tech, defense and crypto industries are helping Donald Trump fund his $300m ballroom at the White House, where work is under way to demolish the entire East Wing.

The list of donors includes tech companies Apple, Amazon, Meta, Microsoft and Google; the defense contractors Booz Allen Hamilton, Lockheed Martin and Palantir; and the communication companies T-Mobile and Comcast, according to CNN.

Billionaire Trump supporters who were major donors to his campaign last year are also featured on the list, including Miriam Adelson, the widow of the casino magnate Sheldon Adelson; the Blackstone CEO, Stephen Schwarzman; the oil tycoon Harold Hamm; and the cryptocurrency billionaires Cameron and Tyler Winklevoss. Howard Lutnick, the commerce secretary and former CEO of Cantor Fitzgerald, is also on the list.

Some donors last week were invited to a White House dinner celebrating their contribution to the ballroom project, including representatives from Google, Amazon and Lockheed Martin.