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Welcome to 12 Bloomsbury Square, an impressive listed building that offers conference, meeting, training, hearing and event space in central London. The easily accessible building is located between Holborn and Tottenham Court Road tube stations and offers a quiet and safe space in the hustle and bustle of central London. The Georgian building overlooks the green space of Bloomsbury Square Gardens and benefits from its private courtyard garden.

12 Bloomsbury Square Limited is a subsidiary company of the Chartered Institute of Arbitrators (CIArb) - 
www.ciarb.organ international centre of excellence for the practice and profession of alternative dispute resolution (ADR), with a growing membership of over 17,000,
based across 149 countries.

Built in the reign of Charles II by the Earl of Southampton in 1661, Bloomsbury Square is on one of London's oldest garden squares. Many of the rooms at the Georgian building of 12 Bloomsbury Square are named after those in the famous 'Bloomsbury Set', including Virginia Woolf, John Maynard Keynes, E. M. Forster and Lytton Strachey. The Bloomsbury Group - or Bloomsbury Set - was a group of associated English writers, intellectuals, philosophers and artists in the first half of the 20th century who worked or studied together near the Bloomsbury area of London. Latterly, Nikolaus Pevsner housed his library at 12 Bloomsbury Square in a panelled room which is now available to hire.

Whatever your event, 12 Bloomsbury Square is the right venue for you. With our experience of running and hosting events we are confident that your event will run smoothly and efficiently. Our team can tailor our services to your needs, so get in touch to book the space for your event.

"We have used 12 Bloomsbury Square for several years for our training events and will continue to do so due to their excellent service and friendly and helpful staff. We highly recommend it as a venue."

​Gwen Carr, NHS Trust

"Ciarb provides top-quality service. The rooms are ideal, the facilities are excellent and the staff are very accommodating. ACCA are proud to do business with them.
​Stephanie Boyce, ACCA (Association of Chartered Certified Accountants)

To read more client reviews, please click

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12 Bloomsbury Square has 18 rooms, ideal for meetings, arbitrations, hearings, team away days and events. The bright and airy rooms all benefit from natural light. Some offer views over green space of Bloomsbury Square Gardens, one of London's oldest squares, while others open onto a small courtyard garden, which is accessible from our Lower Ground floor rooms. To see all room specifications, please click here
for full capacity.

We have 2 large and 16 medium rooms spanning from lower ground floor to third floor, with all floors accessible by a lift. See our floorplans for location of a specific room here and our room details here. To know more about our audiovisual equipment click here and for our catering service here. To read what our clients say about us, click here.

Our prices depend on the room size:

Large room - from £630 + VAT

Premium room - from £465 + VAT

Medium room - from £365 + VAT

We offer special discounted price of £300 + VAT for any Medium rooms,
which are booked as breakout rooms.




Mediation Suite Package

If you are planning a mediation in the coming weeks, 12 Bloomsbury Square offers a Mediation Suite Package, inclusive of meeting room, refreshments and working lunch. 


The package offer includes:

  • 3 medium rooms on the same floor between 9 am and 7 pm

  • Flipchart, notepads and pens

  • Free Wi-Fi

  • Unlimited tea, coffee, mineral water, and biscuits for up to 10 people

  • Working lunch with wraps, baguettes and fresh fruits & juice for up to 10 people

  • Access to communal kitchen with fridge and microwave

The cost of the Mediation Suite Package is £1,395.00 + VAT.


Additional services of this package are:

  • Additional person: £23.95 + VAT 

  • Retiring Room: £300 + VAT

  • Additional catering

  • Additional equipment


Ciarb Members' Offer

Ciarb members have access to 12 Bloomsbury Square's members lounge and can benefit from 10% discount on all venue rentals (room hire cost only, not applicable to other services).


Make use of a quiet retreat when visiting London or when attending an event at 12 Bloomsbury Square. You’ll find comfortable sofas and refreshment station for your enjoyment.


Even though the members lounge is accessible to all members, please make sure you book your slot in advance and have your membership number at hand when booking.



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