Rust & Stone will offer nutritious breakfasts, salads, soups and juices alongside yoga classes and ‘English garden’ inspired evening cocktails.
Lawn Club chef David Gale, previously of The Sanderson and Soho House, is currently developing a menu.
The concept is the brainchild of Allied London chief executive Michael Ingall and James Wrigley of Fluid Bars.
“Rust & Stone really taps into the growing trend for eating clean, juices, yoga and a healthy lifestyle,” said Wrigley.
"By day, we will be creating a beautiful, inviting café bar environment that will provide our customers with temporary refuge from the hustle of the city centre. By night, we will transform into an elegant chill-out destination with organic cocktails, Moroccan style seating, live music and lanterns.
“It will appeal to health conscious workers on their lunchbreaks, as well as parents and families looking for a healthy hangout at the weekend.
“We are aiming to open before August, so watch this space.”