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Great Hall

Great Hall


On the first floor of this Westminster venue is the most impressive and largest function space within the building.


The Great Hall, a conference room of over 370 square metres and over 13 metres in height, is adorned with marbled columned walls, ornate gold leaf and embellished plaster.

An oak floor complements a stunning painted ceiling and two large crystal chandeliers at either end of the event room. There are seven floor-to-ceiling windows along the West wall letting in a lot of natural daylight and allowing for passers-by to gaze up and marvel at the magnificent ceiling and chandeliers.

Located next to the Telford Theatre, the Great Hall can accommodate up to 260 people for a sit down event or 400 for a stand-up reception. The room is the perfect setting for an awards lunch or dinner, product launch, a large meeting or conference or for an impeccable Wedding breakfast. The room is also near to the Smeaton, Council and Brunel rooms which are ideal spaces for a pre-event reception or meeting.

The hall provides a unique space in which to host trade or independent wine tastings for up to 300 people with space for 14 exhibitors.

The room was conceived as part of the building’s initial plans in 1904. The Civil Engineers wanted to create a large hall similar to the grand meeting rooms found at the Inns of Court in the City and to be comparable to impressive rooms such as Lincoln’s Inn. The painted ceiling and chandeliers were donated by a former president of the Institution of Civil Engineers as a reminder of the role the Institution and its members played during the First World War.

Many notable and historic special events have taken place in the Great Hall including the signing of the charter establishing UNESCO (United Nations Educational, Scientific and Cultural Organization) in 1945. King Charles III also sat in the room to take his Royal Navy examinations in his youth. The room can be seen within feature films such as Bridget Jones: Edge of Reason and Starter for 10. The Great Hall was used as a communications room for international journalists when the venue housed the London Media Centre for the 2012 Olympic and Paralympic Games. By way of providing a unique backdrop during London fashion weeks the following fashion houses showcased their seasonal collections here; L’Wren Scott, Alice Temperly and Antonio Berardi.

Secondary Great Hall



  • Full wheelchair  accessibility,  guide dogs allowed
  • Vast open space allows for bespoke stage sets to be created and built
  • Natural daylight
  • Built in PA system
  • Fully bespoke event management and production available for large events with a dedicated production manager
  • Lighting design and equipment
  • Set design and construction
  • High-specification Tandberg video-conferencing
  • Hard-wired interconnectivity between all meeting rooms for video, audio and data
  • Complimentary superfast Wi-Fi
  • Dedicated bandwidths and static IP addresses also available
  • Connectivity to high specification Tandberg video-conferencing
  • Hard-wired interconnectivity between all meeting rooms for video, audio and data
  • 3 phase power (128 amps)
  • Other  Audio Visual  services available on request
29.57 m
13.34 m
13.5 m
394.46 sq m
Height Under Chandelier
4.8 m
Theatre Capacity
Classroom Capacity
Stand Up Buffet Reception
Seated lunch/dinner/cabaret *
Dinner Dance
Seated Buffet

*Based on 6' rounds of 10

Main Access (Double Doors)
2 m
3.35 m
Wall lights
Number of Chandeliers
Light Switches in Room
Power and Communications
Number of 13 amp sockets (4x32A ring mains)
Complimentary Wi-Fi



Telford Theatre?
Telford Theatre

The Telford Theatre, on the first floor of this Westminster venue, is a fabulous purpose-built conference and lecture space with fixed racked seating able to accommodate up to 240 people.

Stephenson Room?
Stephenson Room

On the ground floor to the rear of the main foyer in this spectacular Westminster event venue is the Stephenson room – one of our smaller yet traditional-style function rooms.

Brunel Room?
Brunel Room

On the ground floor off the main foyer is the Brunel Room, one of our most striking function rooms in the Westminster event venue.

The Council Room - One Great George Street Westminster London?
The Council Room - One Great George Street Westminster London

On the ground floor towards the back of the main foyer is the Council Room; one of our most striking function rooms.

Smeaton Room?
Smeaton Room

The Smeaton room is one of the largest function rooms at this magnificent Westminster event venue.