Private dinners, company parties, drinks receptions and wedding celebrations for up to 80 seated guests, or 130 standing, can be organized here when both floors are hired. Smaller groups can take The Larder, a private room for 44 seated or 80 standing. The venue is OPSO, a modern Greek restaurant at 10 Paddington Street in Marylebone, central London.
Seminars and company events
OPSO is a restaurant rather than a meeting venue, and it serves the social side of business life: client dinners, team celebrations, corporate drinks and Christmas parties. The Larder works for a seated dinner around a set menu, and the full restaurant suits a larger standing reception with canapés. The enquiry form accepts start times from 10 a.m. to 10 p.m., so a group can book a lunch, an afternoon reception or a dinner. A 2026 events brochure is available on the site. The website does not mention audiovisual equipment, so a speech with a screen should be checked in advance.
Weddings and receptions
Wedding celebrations are among the events the restaurant takes. A full buyout gives a couple both floors for a seated wedding dinner of up to 80 or a standing reception of up to 130. The Larder fits a rehearsal dinner or a small family meal after a civil ceremony. Birthday parties and other private occasions follow the same formats.
Rooms and capacities
The Larder is the private dining room on the lower ground floor. It seats 44 and holds 80 for drinks. The ground floor has the bar and the main dining room, laid out around a communal marble table with smaller tables alongside. Hiring the whole restaurant brings both levels together for 80 seated or 130 standing.
Catering
The kitchen cooks modern Greek dishes rooted in traditional home cooking, using seasonal produce, much of it sourced directly from Greece. For private events, the chefs design set menus that mix modern plates with Greek comfort dishes, and drinks and canapé receptions are also offered. The bar makes cocktails with Greek liqueurs, which can open a reception before dinner.
History and setting
OPSO opened in 2014. Its name comes from an ancient Greek word for a delicious morsel of food. The restaurant displays Michelin 2023, Time Out and Diner's Choice 2025 logos on its site. Marylebone is a residential and shopping district north of Oxford Street, with Marylebone High Street a few steps away.
Getting there
The restaurant stands on Paddington Street, a short walk from Baker Street Underground station, which is served by the Bakerloo, Circle, Hammersmith and City, Jubilee and Metropolitan lines. Heathrow Express trains arrive at Paddington, a short taxi ride away. Regular opening hours run from lunch or brunch until late evening, seven days a week, so the team is used to both daytime and evening service.
