Barbican Renewal Programme - Glass Systems and Envelope
Open
Interest closes in 12 days
Key facts
- Deadline to express interest or request to participate
- Wednesday 28 October 2026, 12:00 (UK time) Interest closes in 12 days
- Buyer's estimated value
- £10,600,000 (excl. VAT) The buyer's own estimate, not income to you.
- Clarification questions deadline
- 16 October 2026, 12:00
- Contract period
- 1 Mar 2027 to 27 Mar 2029
- Procedure
- Competitive flexible procedure
- Notice type
- Tender notice (UK4)
- Suitable for SMEs (per buyer)
- Yes
Decision brief
Taken from the buyer's published notice (shown as written, shortened where long). Tenderpatch has not added to or interpreted it. Always read the official documents before bidding.
- How bids will be scored
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- Commercial 40% : Suppliers’ commercial responses will evaluated against total contract cost. The commercial evaluation methodology is set out in the tender documents.
- Technical 45% : Suppliers will be required to submit responses to a number of sub-weighted questions relating to organisation, H&S, Risk Management, Programme / method statement, Quality and delivery, BSA/HRA, Supply chain, Trade conta…
- Responsible procurement 15% : Suppliers will be required to submit responses to set out how they will deliver against climate action initiatives and social value.
- Conditions of participation (what you must show)
-
economic As specified in the tender documents
technical Suppliers will be required to meet the conditions of participation set out in the tender documents. These include minimum requirements for financial capacity, insurance, modern slavery and data protection. In addition, suppliers will be required to respond to scored questions regarding experience. The highest scoring bidders who meet the conditions of participation will be invited to participate in the next tender stage in accordance with the methodology set out in the tender documents.
other The ITP will set out the information which bidders are required to provide to the City to enable it to draw up a list of up to a maximum of 4 pre-qualified applicants who will be able to proceed to the next stage of the procurement. In the event that a bidder or multiple bidders achieve the same moderated score as the 4th placed bidder, those bidders will also be invited to proceed to the next stage of the procurement.
- Contract length and extensions
- 1 Mar 2027 to 27 Mar 2029. Extensions: Extensions may be used if there is programme overrun due to unforeseen events, such as discoveries. Options: The Contracting Authority is seeking separately identified pricing for two elements where the final package allocation is yet to be determined. These are: Frobisher Crescent Fire-Rated Glazing (Conservatory). Scope: Frobisher Crescent fire-resisting stick curtain walling with feature fins, replacin…
- How to submit
- This tendering exercise is being undertaken using the electronic tendering system ‘City of London Corporation Sourcing & Contracts Portal’ (https://cityoflondon.ukp.app.jaggaer.com/). Suppliers will need to register an interest on the system in order to participate and registration is free. Open cityoflondon.ukp.app.jaggaer.com ↗ Electronic submission: allowed.
- Tender documents
- No document links in the notice. Use the official notice link.
New to public tenders? Plain-English guide to this page
- Framework
- An agreement that sets terms for work the buyer may order later, often from several suppliers. The value shown usually covers the whole agreement, not one job.
- Open for bids / closing date
- You must submit by the closing date and time, normally through the buyer's own online portal. Late bids are normally refused.
- Clarification questions
- A deadline for asking the buyer questions about the tender. It is earlier than the closing date.
- Conditions of participation
- What the buyer asks suppliers to show before they can be considered, such as experience, insurance or accreditations.
- Bids are scored on
- How the buyer will compare bids, usually a split between price and quality. A 60/40 split in favour of quality means the cheapest bid will not necessarily win.
- Lots
- A tender can be split into parts. You can often bid for only the lots that suit you.
- Area (ITL)
- The buyer names an official statistical area for where the work is, not a street address. Check the tender documents for the actual sites.
- UK4 and other notice codes
- Official codes for the type of notice. A "tender notice" means bids are being invited.
General explanations written by Tenderpatch, not part of this notice.
Description
Glass Systems and Envelope — Barbican Renewal Programme.
This is a bespoke glazed envelope design-and-build package, not new-build construction, on a part Grade II listed and Heritage sensitive building – The Barbican Arts Centre. The works comprise new glazed envelope and façade systems to the Conservatory and Stair 8, following directly behind the demolition (by others), which removes the existing glazing first. The package includes primary steel structure to the Conservatory and Terrace, and the façade access/maintenance walkway and associated gutters and louvres. The scope of works includes:
- Conservatory roof and vertical glazing: louvres, vents, perimeter benches, insulation, aluminum paneling, doors and associated gutters, including the Arid House.
- Steel structure relating to Conservatory glazing: primary steel structure supporting the Conservatory roof and vertical glazing systems, carried within this package's own Contractor Design Portion.
- Conservatory Lantern: re-glazed roof lantern.
- Conservatory Roof lights: Level 02 office roof lights and associated overhead glazing.
- Garden Room glazing, doors and associated gutters: refurbished steel framing to Lakeside Terrace with new acoustic double glazing/doorsets, overhead and Conservatory-facing glazing, and plant-room gutter louvre/infill system.
- Conservatory Terrace Glazing and Steel: new Level 04 enclosure — bespoke steel T-profile vertical glazing, matching overhead glazing, and the Terrace's primary steel structure and roof steelwork.
- Sculpture Court Roof lights: new roof lights, scope to be developed with the Architect and Façade Engineer.
- Stair 8 glazing and associated structure, louvres and gutters: crown/roof glazing on new external primary steel RHS mullions, planters glazing renewal, automated opening windows, exoskeleton mullion replacement (this package's own CDP), and crown mechanical louvres.
- Visual and performance mock-ups: façade and propagation bench, Conservatory Terrace and Fly tower infill glazing visual mock-ups, plus off-site performance mock-ups covering roof and façade weather-resistance to CWCT Sequence A methodology.
- Facade access and associated maintenance walkway: including the Conservatory Terrace mesh walkway and fascia panel.