"Mirazur’s Mauro Colagreco brings hyper-seasonal British produce to a Michelin-starred OWO dining room; reserve for anniversaries and serious client dinners."
When Raffles opened inside The Old War Office on Whitehall in 2023, its flagship restaurant came from Mauro Colagreco, the Argentine-Italian chef behind three-Michelin-starred Mirazur on the French Riviera, once ranked the world’s best restaurant. The London room earned its own Michelin star in 2025, months after opening. It is one of the most ambitious arrivals in our London dining guide and a benchmark for the capital’s vegetable-forward fine dining.
Colagreco built his name at Mirazur on a garden-first philosophy, and he has carried it to Whitehall: the menu lists more than seventy varieties of British fruit and vegetable first, with protein in a supporting role. The signature dish is simply called Lettuce — red oak leaves grown on an urban farm in Elephant and Castle, plated with smoked haddock, sesame chips and a vermouth-and-cockle sauce — a plate that captures the whole approach in one course. The five-course tasting menu runs £165 per person; a limited-edition flower menu has also appeared at £175 for five courses and £205 for seven.
Wine flights split into themed routes, including an Exploration pairing at £125 and a prestige Leisure route. The cooking is technically elaborate but the produce always leads. For more of the city, read our London guide, compare the precision of Alex Dilling at Café Royal, or browse our picks to impress clients.
The dining room sits on the ground floor of the restored War Office, all high ceilings, heritage detailing and the quiet confidence of a grand hotel restaurant. Tables are well spaced and the sound level stays low, so this is a room for conversation that needs to be heard and not overheard. Lighting is soft and warm, service is formal without being starchy, and the dress code leans smart — jackets are the safe call. It is built for an occasion rather than a casual drop-in.
Book this room to impress a client or mark an anniversary for three reasons: the pedigree speaks for itself, from Mirazur to a London Michelin star; the vegetable-led menu gives the table something genuinely distinctive to discuss; and the grand-hotel setting signals that the evening matters. A typical scene: a quiet corner table, the Lettuce course arriving to murmurs, a considered wine flight pacing the night. Reserve well ahead, especially for weekends. See also our picks to impress clients and for an anniversary.
Not for a casual or budget evening: at £165 before wine, in a formal hotel dining room, this is a special-occasion tasting menu rather than a spontaneous night out.
Yes, for a special-occasion fine-dining evening. The room earned a Michelin star in 2025, the chef is the man behind three-starred Mirazur, and the vegetable-led cooking — epitomised by the Lettuce dish — is genuinely distinctive. At £165 for five courses before wine it is a significant spend, but the produce-first approach and the grand OWO setting justify it for an occasion.
The signature is simply called Lettuce: red oak leaves grown on an urban farm in Elephant and Castle, served with smoked haddock, sesame chips and a vermouth-and-cockle sauce. It captures Colagreco’s garden-first philosophy, in which more than seventy British fruits and vegetables lead the menu and protein plays a supporting role.
The core five-course tasting menu is £165 per person. A limited-edition flower menu has also run at £175 for five courses and £205 for seven. Wine pairings start around £125 for the Exploration route, with a prestige Leisure route at the top end. Prices can change, so confirm the current format when you book.
The restaurant is on the ground floor of Raffles London at The OWO, 57 Whitehall, in Westminster — the restored Old War Office. It serves dinner Tuesday through Saturday. For more of the city see our London dining guide.
Booked through Raffles London and The Fork; prime evenings fill early. Reserve ahead and confirm the current tasting-menu format.
Affiliate disclosure: Restaurants for Kings may earn a commission when you book through our reservation links, at no cost to you. Our scores are editorial and never paid for.
Mauro Colagreco at Raffles London earns its place for a Michelin-starred, vegetable-led tasting menu inside The OWO, led by the chef behind Mirazur.
Best of London 2026 →