Scope
Reference
Prj_965, pqq_52
Description
About the Project
The proposed works are comprised of high-level repairs to the Great Hall roof, to include:
• Refurbishment of the central lantern and fleche
• Isolated repairs on the Collyweston stone slate roof
• Repairs and improvements to rainwater discharge
• High-level masonry repairs and cleaning, to include clerestories, parapets, turrets, pinnacles and tracery
• turrets, pinnacles and tracery
• Re-bedding of gable copings with improved details
• Installation of a new weathervane on the fleche
The Great Hall and the wider Guildhall complex will remain operational throughout the works. The contractor’s compound will be located on the large, paved area immediately north of the Old Library.
The Great Hall is enclosed by ambulatories on all sides, which prevents the use of full-height, ground-supported scaffolding. Consequently, scaffolding to the north and south elevations will need to be cradled from parapet level, while access to the east and west gables will require bridging over the ambulatories and bearing onto adjacent structures. An indicative scaffolding design and methodology have been developed and will be included within the tender documentation.
The Contractor is anticipated to take possession of the site in early October 2026. Works to the lantern and south elevation of the Great Hall must be completed no later than late October 2027, in advance of the annual Lord Mayor’s Show.
About the Great Hall
London’s Guildhall has been at the heart of the City’s government for centuries. The
site has been a centre of civic administration since at least the 12th century, although
there is evidence that a guildhall or meeting place has existed on the site as early as
the Saxon period. It was built on the site of a Roman amphitheatre which dates to 70
AD, the remains of which were rediscovered in 1987, during the construction of the
adjacent art gallery, and are on public display in the gallery’s purpose-built basement
display.
The medieval Guildhall was erected between 1411 and 1440 to serve as
the administrative and ceremonial centre of the City of London. It was built in
Perpendicular Gothic style, to the designs of John Croxton, the master mason
responsible for the structure’s grand stonework. After the Great Fire of London
(1666) destroyed the roof, Sir Christopher Wren and Robert Hooke oversaw repairs,
replacing the fire damaged roof and altering the interior.
The next phase of alterations occurred between 1788-91 under the auspices of
George Dance the Younger, who redesigned the interior and introduced the building’s
striking neoclassical porch. Dance also designed a new façade for the Guildhall
Chapel, which was demolished in 1822 to make way for the Mayor’s and City of
London Court. In 1866-70 Sir Horace Jones undertook major works to restore many
of the building’s lost Gothic elements.
The building suffered extensive damage during the Second World War Blitz and
restoration work was completed in the 1950s under the direction of Sir Giles Gilbert
Scott. Today the Guildhall is a blend of medieval, Georgian, Victorian and post-war
architecture, reflecting its long and dynamic history, and the building remains the
ceremonial and administrative centre of the City of London Corporation.
Please note that this is not a call for competition.
Total value (estimated)
- £2,700,000 excluding VAT
- £3,240,000 including VAT
Below the relevant threshold
Contract dates (estimated)
- 1 October 2026 to 31 December 2027
- 1 year, 3 months
Main procurement category
Works
CPV classifications
- 44112400 - Roof
- 44112410 - Roof frames
- 44112420 - Roof supports
- 44112430 - Roof trusses
- 44112500 - Roofing materials
- 45260000 - Roof works and other special trade construction works
Contract locations
- UKI - London
Engagement
Engagement deadline
25 February 2026
Engagement process description
The PME is being conducted via the electronic tendering system ‘City of London Corporation Sourcing & Contracts Portal’ (url:www.cityoflondon.ukp.app.jaggaer.com),Prj ref is 965, pqq_52.
To access the PME documentation, please register on the system for free and search ‘Guildhall - Great Hall Roof H&S Works'.
Organisations should submit their completed PME questionnaire document via the system by the return deadline of 25/02/26 14:00 to participate.
PME document submissions cannot be uploaded after the return deadline.
Participation
Particular suitability
- Small and medium-sized enterprises (SME)
- Voluntary, community and social enterprises (VCSE)
Submission
Publication date of tender notice (estimated)
4 May 2026
Contracting authority
The Mayor and Commonalty and Citizens of the City of London
- Public Procurement Organisation Number: PYQD-1693-MYXR
PO Box 270
City of London
EC2P 2EJ
United Kingdom
Contact name: Hirdial Rai
Telephone: 020 7606 3030
Email: hirdial.rai@cityoflondon.gov.uk
Website: https://www.cityoflondon.gov.uk
Region: UKI43 - Haringey and Islington
Organisation type: Public authority - sub-central government