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Published 15 Sept 2026, 16:03 BST

Official UK procurement notice

Barbican Renewal Programme - Glass Systems and Envelope

Authority: The Mayor and Commonalty and Citizens of the City of London (Local council)

WorksCompetitive flexible procedureAbove thresholdSME suitable
Sectors: Construction Materials & Prefab (44)Construction & Civil Engineering (45) Delivery: London (UKI)
Published estimate £10,600,000≈ £5.1m / year · £12,720,000 inc. VAT
Tender notice expected 2 Oct 2026from the planned procurement notice
Contract term 2 yrs 1 moup to 2 yrs 6 mo with extensions · starts 1 Mar 2027

What is being bought

Published requirement description

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, aluminium panelling, 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 Rooflights: Level 02 office rooflights 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.

Read the full description (930 more characters)

- 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 Rooflights: new rooflights, 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 Flytower 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.

  • How the procedure runs: Stage 1. Invitation to Participate (ITP) Stage 2 Invitation to tender ITT) Comprising of: - Structured workshops and site visits with shortlisted candidates. To communicate effectively the existing conditions, complex interfaces, Installation sequencing and methodology to ensure compliant pricing and invite innovate alternatives. - Technical submission - Commercial submission - Interview

CPV: Building installation work · Glasshouses · Structural steelworks

The lotProcurement structure

single lot · value published
Lot #1Lot 1PlannedRenewal 2 yrs 1 moSMEPublished value£10,600,000
Contract period: 1 Mar 2027 — 27 Mar 2029 (2 yrs 1 mo) · up to 2 yrs 6 mo with extensionsEligibility: SME eligibleDelivery: London
Value
£10,600,000 exc. VAT · £12,720,000 inc. VAT
Extensions
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, replacing the existing glazing on a like-for-like sightline basis, per the External Envelope Systems specification. Art more…Gallery Roof Lights (Art Gallery Foyers -Level 4) Scope: New Class 2 rooflights, forming part of the broader Art Gallery Foyers glazing replacement (steel-framed glazing to Level 4, automated sliding doorset to Sculpture Court, AOV smoke vents, automatic opening skylights to the library clerestory) · Extensions may be used if there is programme overrun due to unforeseen events, such as discoveries.
Second stage
up to 4 candidates invited to tender
44211500 Glasshouses45223210 Structural steelworks45300000 Building installation work

What it takes to win

Evaluation split and conditions of participation as published — the tender pack may add more
Conditions of participation6
  • Economic & financial standing
    As specified in the tender documents
  • Technical & professional ability
    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 more…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
  • Condition of participation
    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 more…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.
    shortlisting
  • Economic & financial standing
    As specified in the tender documents
  • Technical & professional ability
    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 more…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
  • Condition of participation
    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 more…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.
    shortlisting

Procedure terms & legal framework

From the official record
Procedure method
Competitive flexible procedure
Legal basis
UKPGA · 2023/54 Procurement Act 2023
Procurement category
Works
Notice status
Planned procurement
Procurement threshold
Above threshold (FTS publication)
Regulatory regime
Standard
Commercial structure
Stand-alone contract (no framework)
Competition type
Competitive procedure
GPA / WTO covered
Unspecified in notice
Recurring procurement
No (one-off requirement)
First published
15 Sept 2026, 16:03 BST
Last source update
15 Sept 2026, 16:03 BST
Award evaluation window
Submission end — 19 Feb 2027, 23:59 GMT
Authority reference
26/176/PS
Latest notice
Planned procurement notice (UK3)
Classification (CPV)
Building installation workGlasshousesStructural steelworks
Delivery area
London (UKI)
Official registry OCID
ocds-h6vhtk-06fa74
How it runs
Stage 1. Invitation to Participate (ITP) Stage 2 Invitation to tender ITT) Comprising of: - Structured workshops and site visits with shortlisted candidates. To communicate effectively the existing conditions, complex interfaces, Installation sequencing and methodology to ensure compliant pricing and invite innovate alternatives. - Technical submission - Commercial submission - Interview
Review and risk notes
Risks
The contract may require modification in the event of project overrun to ensure continuation of service and technical expertise is retained from the service provider (for example to provide additional works)

How it was run

Run throughJaggaer ↗Supplier login requiredElectronic submission allowedLanguage: EN
Portal record ↗
Access & registration note: Free; latest Chrome/Edge/Firefox only — corporate browsers fail
Expression of interest (EOI)
28 Oct 2026, 12:00 GMT
Submission deadline
28 Oct 2026, 12:00 GMT
Clarification deadline
16 Oct 2026, 12:00 BST
Submission channel
Official e-sourcing portal
Electronic submission
Allowed
Accepted languages
en
Detailed submission instructions & authority contactsFrom official release
This tendering exercise is being undertaken using the electronic tendering system ‘City of London Corporation Sourcing & Contracts Portal’ (cityoflondon.ukp.app.jaggaer.com ↗). Suppliers will need to register an interest on the system in order to participate and registration is free

Timeline

7 published dates · Europe/London
  1. Planning notice published5 days ago
    15 Sept 2026, 16:03 BST
  2. Tender notice expectedin 12 days
    2 Oct 2026, 23:59 BST
  3. Clarification questions byin 26 days
    16 Oct 2026, 12:00 BST
  4. Expressions of interest byin 38 days
    28 Oct 2026, 12:00 GMT
  5. Submission deadlinein 38 days
    28 Oct 2026, 12:00 GMT
  6. Award decision expected byin 152 days
    19 Feb 2027, 23:59 GMT
  7. Contract startsin 161 days
    1 Mar 2027, 00:00 GMT

Commercial outcome & contract awards

Pipeline notice
Awards (0)
No award published
Contracts (0)
No contract published
Bid statistics
No aggregate bid statistics published

Notice history

1 event · 1 release on Find a Tender
  1. Planned procurement notice published
    15 Sept 2026, 16:03 BSTUK3

Contracting authority & participating public bodies

The Mayor and Commonalty and Citizens of the City of London

Contracting authorityPublic authority - sub-central government GB-PPON: PYQD-1693-MYXR PO Box 270, City of London, London, EC2P 2EJ 020 7606 3030
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Official documents & specifications (1)

Official links; attachments are not copied

Notices published for this procedure