A corporate Christmas party venue in London with private dining and a vault bar

Organising the company Christmas party sounds straightforward until the brief reaches your desk. The guest list spans departments, one director wants to make a speech, half the team wants to stay for dancing, and somebody has already asked about the vegan menu. The venue has to accommodate all of it without making the evening feel like another meeting with crackers.

If you are looking for a corporate Christmas party venue in London, Aki offers a more characterful answer. At 1 Cavendish Square in Marylebone, contemporary Japanese dining meets a choice of genuinely different event spaces: a private floor with its own terrace and bar, a former banking hall for larger gatherings, and Kiyori, the cocktail bar waiting in the vaults below.

That means the office Christmas party can take the shape your company actually wants. An intimate dinner for senior colleagues. Japanese sharing plates for the whole department. Drinks and canapés followed by a DJ. Or an exclusive celebration that moves through the building without asking your guests to find a second venue.

Christmas party venue hire in London: choose the space around your guest list

The right corporate venue is not simply the one with enough chairs. A directors’ dinner needs something different from a departmental drinks reception, and a room that works beautifully for twenty guests may feel entirely wrong for two hundred.

Aki’s spaces allow the event to be shaped around your numbers, your preferred level of privacy and the way you want the evening to move.

The Atrium: a private Christmas party venue in London for dinners and receptions

For smaller companies, leadership teams and hosts who want the room to themselves, The Atrium offers an entirely private floor above the main restaurant. It has its own dining room, bar and terrace, reached by a backlit spiral staircase that marks a clear separation between your event and the restaurant below.

The dining room accommodates 8 to 22 seated guests, with hand-painted walls inspired by a Japanese garden, marble-topped tables and a dedicated bar. The terrace can seat up to 12 for a more intimate dinner. Combine the two spaces and The Atrium can host standing receptions for up to 60 guests.

Its most distinctive feature is the retractable glass roof. Open it when conditions allow, or close it against the December weather while the floor-to-ceiling mirrors and Art Deco lamps keep the terrace glowing. Your event has the atmosphere of a rooftop setting without being entirely at the mercy of the forecast.

This is the natural choice for a small office Christmas dinner, an end-of-year client celebration or a private drinks event where speeches and conversation matter as much as the food.

Explore The Atrium and private terrace hire at Aki.

Main Dining Room: corporate Christmas dining for up to 80 seated guests

When the guest list extends beyond a conventional private dining room, Aki’s Main Dining Room offers space for up to 80 seated guests or 150 standing. It allows larger teams to come together without moving the celebration into an anonymous hotel function room.

The setting is a Grade II-listed former banking hall: grand in scale, detailed in its finish and designed first and foremost for dining. That matters for a corporate Christmas party. The room already has the atmosphere you want your guests to walk into; it does not need to be manufactured around a row of tables.

Japanese sharing menus give the meal a naturally sociable quality. Sushi, sashimi, robata-grilled dishes and plates designed for the table create conversation across departments, while alternative event formats allow the space to work for standing receptions as well as seated dinners.

For larger company celebrations that still want food and setting to carry the occasion, the Main Dining Room offers a strong middle ground between an intimate private dinner and exclusive hire.

Kiyori: Christmas drinks, DJs and the party after dinner

Some office Christmas parties are built around dinner. Others only really begin once the plates have been cleared. Kiyori gives both versions somewhere to go.

Set inside the building’s original bank vaults, Kiyori combines a bar, lounge and fully functioning club space. It can accommodate 12 to 20 seated guests or up to 80 standing, making it suitable for a dedicated Christmas drinks event as well as an after-dinner continuation.

Japanese-inspired cocktails, spirits and a lower-lit setting change the pace without requiring your guests to leave the building. There is no second venue to find, no taxi queue and no gradual disappearance of colleagues between dinner and the next address.

If you would like the evening to continue downstairs, mention it during your enquiry. The events team can coordinate the transition and discuss options including DJs and the most suitable use of the space.

Discover Kiyori cocktail bar.

An exclusive Christmas party venue in London for up to 250 standing guests

For larger companies and full venue takeovers, Aki is available for exclusive hire for up to 250 standing guests. This is the option for a Christmas party that needs more than one room and more than one mood.

You might begin with a reception before moving into dinner, reserve a quieter space for speeches, then take the celebration downstairs as the evening gathers energy. The precise flow can be discussed with the events team rather than forced into a fixed package.

Exclusive hire also gives you greater control over how the event feels. Menus, drinks, styling and entertainment can be considered as part of one bespoke plan, with the different spaces working together rather than competing for attention.

Speak to the team about your preferred format, guest numbers and any production requirements. Seated arrangements and event layouts for exclusive hire should be discussed as part of your tailored proposal.

Explore events and private dining at Aki London.

Japanese Christmas party menus, canapés and drinks

By December, many of your guests will already have encountered the same Christmas dinner more than once. Aki offers an alternative: Japanese food designed for sharing, celebration and a little more conversation.

General event menus start from £75 per person, with the published Kiku, Ume, Take and Matsu collections offering different levels of experience. Menus can draw on sushi and sashimi, seasonal small plates, robata-grilled dishes, wagyu and Japanese desserts. Bespoke options are available for events that need a format of their own.

For a Christmas party, the events team will confirm the current menu, pricing and festive arrangements within your proposal. That keeps the offer clear: you receive the right menu for your date and event rather than a generic package with details hidden in the small print.

Discover the festive season at Aki.

Everything the office Christmas party organiser needs in one place

An office Christmas party venue in London should do more than provide an attractive room. It should make the organiser’s job easier: answering practical questions early, accommodating different guests and helping the event run to plan.

Request menus and a tailored proposal

A Christmas party in Marylebone, convenient for Oxford Circus and Bond Street

Aki is located at 1 Cavendish Square, Marylebone, London W1G 0LA, a short walk from Oxford Circus and Bond Street stations. For companies gathering colleagues from different offices, that central position makes the venue straightforward to reach.

A Christmas party in Marylebone also offers a useful change of register. Cavendish Square is close to Oxford Street and the West End, but the immediate setting feels more composed than the busiest surrounding streets. Guests can arrive without feeling that they have simply moved from the office to another crowded pavement.

For the organiser, the address is easy to communicate. For everyone attending, it offers a central destination with dinner, drinks and the journey home all conveniently close.

Not another corporate function room

The strongest case for Aki is not any single feature. It is the way the different parts work together: contemporary Japanese food, a choice of distinctive spaces, support with the practical details and a cocktail bar beneath the restaurant.

A small team can have genuine privacy. A larger company can gather in a banking hall with real presence. A drinks reception can become dinner, and dinner can become a night at Kiyori. The event does not have to fit one template.

For the person making the booking, that means fewer compromises. For the people attending, it means a company celebration with its own character rather than another date in the corporate calendar.

“Set inside a beautifully restored former bank near Oxford Street… impressive without feeling too formal. After dinner, we went downstairs to the bar inside the old bank vault — a great place to stay for a cocktail afterwards.”
Charlie (Google review, October 2026)

How to plan your corporate Christmas party at Aki

Begin with the three details that will shape the proposal: your preferred date, approximate guest count and the kind of event you have in mind. You do not need to arrive with every detail resolved.

For general event planning, Aki recommends enquiring at least four to six weeks ahead for seated dinners and eight to twelve weeks ahead for standing receptions or bespoke events. December is a peak period, so earlier enquiries are advisable. Shorter-notice requests can still be discussed with the team.

Give the company Christmas party a better setting

The person organising the office Christmas party is often looking for one decision that makes every subsequent decision easier. The right venue gives them that: the space, the food, the practical support and somewhere for the evening to go next.

Aki brings those elements together on Cavendish Square. Choose The Atrium for privacy, the Main Dining Room for a larger gathering, Kiyori for drinks or exclusive hire for a celebration across the building. Then let the party feel less like an obligation and more like an event your colleagues would have chosen themselves.

Aki is available as private venue hire for corporate Christmas parties in London at 1 Cavendish Square, Marylebone, London W1G 0LA, close to Oxford Circus and Bond Street. The Atrium accommodates 8–22 seated guests in its dining room, up to 12 on the terrace and up to 60 standing across the private floor. The Main Dining Room accommodates up to 80 seated or 150 standing; Kiyori accommodates 12–20 seated or 80 standing; and exclusive hire is available for up to 250 standing guests. General Japanese event menus start from £75 per person, with bespoke formats available. Menus, capacities, prices and event arrangements are subject to confirmation within a tailored proposal.