Tender: Guildhall Great Hall Roof and High-Level Masonry Repairs – City of London

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City of London Corporation is seeking a contractor for high-level repairs to the Great Hall roof at Guildhall, including refurbishment of the central lantern and fleche, isolated Collyweston stone slate repairs, rainwater discharge improvements, high-level masonry repairs and cleaning to clerestories, parapets, turrets, pinnacles and tracery, re-bedding of gable copings, and installation of a new weathervane on the fleche. The Great Hall and wider Guildhall complex will remain operational during works; the contractor compound will be on the paved area immediately north of the Old Library. Full-height, ground-supported scaffolding cannot be used because ambulatories enclose the Hall, so north/south elevations require cradled scaffolding from parapet level and east/west gables require bridging and bearing onto adjacent structures; an indicative scaffolding design and methodology will be included in the tender documentation. The contractor is anticipated to take possession in early October 2026, and works to the lantern and south elevation must be completed no later than late October 2027 ahead of the annual Lord Mayor’s Show. This procurement is a two-stage competitive below-threshold process under the Procurement Act 2023, with a selection stage that will shortlist a maximum of six suppliers for the ITT stage.