Located at 17 Wardour Street, the split level 148-cover site is the first central London restaurant from the former Claridges head chef.
Sargeant said: “Having been involved with the project from the outset, it’s great to see it finally coming together and I can’t wait to open the doors to the public on June 15.
"Soho is the perfect location for Morden & Lea and I hope the dual-offering of a brasserie-style menu served in the upstairs restaurant, and a more-relaxed casual sharing menu served downstairs will appeal to both London foodies and visitors to the capital alike.”
The launch comes two months after the opening of Sargeant's first pub The Duke William in Ickham, Kent. The chef also co-owns Folkstone restaurants Rocksalt and The Smokehouse.
Morden & Lea will open for lunch and dinner Monday to Sunday. Reservations can now be made by calling 0203 764 2277 or by booking online at www.mordenandlea.com.