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Main Dining Room at OPSO

OPSO · OPSO, London, W1U 5QL · Show map
Get an instant quote to unlock offer Exclusive offer available at this venue
Up to 70standing
Up to 40seated
Baker Streetnearest station
Drinks Receptionbest for

About this space

Contemporary Greek tapas
High quality wines
Marylebone location
Natural daylight
Private bar
Dedicated waiting team
Music and decorations options
Minimum spend basis with no hire fee
The Main Dining Room at Opso is ideal for private and corporate events, including Christmas parties, networking, birthdays or product launches. It can be used for arrival drinks and canapés before the guests make their way to the Larder Room for a sit down dinner, or it can be used as a stylish self contained space on the ground level. It works very well for standing parties for up to 70 guests or seated dinners for up to 40 guests. The Main Dining room is offered on a minimum spend basis, there is no hire fee. Please enquire through Hire Space for availability and rates.

Features

Wifi
Contemporary Greek Tapas
High quality wines
Marylebone Location
Natural daylight

Food & Drink

Professional Kitchen
Halal Catering
Kosher Catering

Space

Disabled Access
Storage Space
Outdoor Space
80m² (861ft²)
Ceiling Height 3m (10ft)

Licenses

Licensed Until 11pm

Capacities

40 Dining
70 Reception
70 Standing

Guide prices

Indicative pricing based on standard rates. Request an instant quote for your exact brief.

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Great for a...

Christmas Party
Contemporary Greek festive dining Christmas Party
  • • Larder Room accommodates up to 44 seated guests with exclusive privacy
  • • Private bar ensures seamless service throughout your celebration
  • • Music and decorations options create personalized festive atmosphere
Corporate Event
Professional Marylebone venue Corporate Event
  • • Central Marylebone location provides easy access for all attendees
  • • Dedicated waiting team delivers professional service standards
  • • Flexible standing reception for up to 80 guests maximizes networking
Birthday Party
Modern Greek celebration space Birthday Party
  • • Contemporary Greek tapas menu offers unique dining experience
  • • Valrhona mousse cake preparation adds special celebratory touch
  • • Private Larder Room creates intimate atmosphere for milestone celebrations

Video tour

Location

OPSO, W1U 5QL
OPSO OPSO10 Paddington StreetMarylebone W1U 5QLLondon
Baker Street
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Frequently asked questions

What are the minimum spend requirements for private events at OPSO?
The Larder room (lower ground floor) has a minimum spend of £4,000-£5,000 depending on the day, while exclusive hire of the entire venue requires a £10,000 minimum spend. All minimum spends include VAT but exclude the optional 15% service charge.
What are the capacity limits for the different spaces available?
The Larder room accommodates up to 44 guests for seated dining or up to 80 guests for standing receptions. The Main Dining Room works for standing parties up to 70 guests or seated dinners for up to 40 guests.
What deposit is required to secure a booking?
A £2,000 deposit is required to confirm your reservation. This deposit will be refunded following the event.
What's included with the private event package?
Private events include exclusive use of the space, a dedicated waiting team, a private bar, and the option to play music and add decorations of your choice. The venue can also arrange custom Valrhona mousse cakes at £50 per kilo.
Can both the Main Dining Room and Larder Room be used together for larger events?
Yes, for exclusive venue hire you can utilize both floors - starting with drinks and nibbles on the ground floor Main Dining Room, then continuing with either seated dinner or standing reception using both spaces. This requires the £10,000 minimum spend.
What are the service charge arrangements?
There is an optional 15% discretionary service charge that does not count toward the minimum spend requirement. This appears as a separate charge on top of your food and beverage costs.
Are there any restrictions on decorations, music, or AV equipment?
You can add decorations of your choice and play music in the private spaces. The venue can accommodate pop-up banner signage with company logos and product displays, and they have TV/projection screen capabilities for brand videos or presentations.
What food and beverage options are available for events?
OPSO offers contemporary Greek sharing dishes with premium ingredients sourced from Greece and local suppliers. Events can include canapés and cocktails, multi-course seated dinners, open bar service with top-shelf liquor, custom cocktail options, and champagne toasts.
How far in advance should events be booked?
The venue accepts bookings well in advance - quotes show events being planned over a year ahead (October 2026). Site visits can be arranged to discuss event details before confirming your booking.
What are the typical event timings and duration limits?
Events typically run in the evening with arrival times between 4pm-6:30pm. The venue can accommodate events until late night (quotes show events running until 11pm-1am), and Christmas parties often run from 5:30pm-11:00pm.
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