Leon, the healthy fast food chain, has confirmed it will open its first US site – in Washington DC’s L Street next week.

The launch had originally been planned for late August but will now commence with a media preview day on 12 September.

Co-founder John Vincent said: “DC feels like the most special of starts to our U.S. adventure. We have found the people, community and culture of D.C. very inspiring. We hope we can do our bit to make it easier for Washingtonians to eat and live well.”

Kim Darroch, British Ambassador to the US, said: “LEON is a runaway success in the U.K., with nearly 50 locations around the country – including one on Victoria Street in central London, a short walk from my office. I’m a frequent customer! With the first U.S. location opening right down the road in Washington, LEON will join the ranks of other successful British exports like Somerset cheddar and Scotch whisky, contributing to a bilateral food and drink relationship worth $2.8bn.”