Tender

Tower Bridge Mud Tanks

THE MAYOR AND COMMONALTY AND CITIZENS OF THE CITY OF LONDON

This public procurement record has 2 releases in its history.

Tender

22 Apr 2025 at 11:09

UK4 - Tender Notice
Planning

15 Apr 2025 at 13:32

UK2 - Preliminary Market Engagement Notice
Summary of the contracting process

The City of London's procurement process for the "Tower Bridge Mud Tanks" project is currently at the tender stage. The buying organisation, officially known as The Mayor and Commonalty and Citizens of the City of London, requires repair and enhancement works to the mud tanks located beneath Tower Bridge, which are integral to its rainwater and drainage infrastructure. This procurement falls under the 'works' category with an estimated contract value of £1,680,000, and is conducted via an open procurement method. Prospective contractors should note that the submission deadline is 27th May 2025, following the close of the enquiry period on 20th May 2025. The project is specifically situated in the City of London, UK, and aligns with construction work for bridges as its industry category.

This tender presents substantial opportunities for businesses engaged in construction and infrastructure repair, particularly those with experience in structural enhancements and safety improvements. It is especially well-suited for small and medium enterprises (SMEs) and voluntary, community, and social enterprises (VCSEs), given the project's below-threshold status and open competition nature. The tender's emphasis on quality aspects, such as technical experience, proposed team composition, and logistical capabilities, alongside cost and responsible procurement metrics, encourages innovative solutions that can deliver safety, sustainability, and operational efficiency improvements. Business growth can be achieved through successful project delivery, ensuring compliance with high standards in health, safety, and environmental performance.

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Notice Information

Notice Title

Tower Bridge Mud Tanks

Notice Description

Tower Bridge Mud Tanks - this project will deliver repairs and enhancement works to 6no. mud tanks that form part of the rainwater/surface drainage infrastructure at Tower Bridge, as well as associated repair/enhancement works to improve safety, access, lighting, etc. in the 6no. mud tanks bays, which are situated on the lower levels of the bridge. Tower Bridge is a bascule bridge and beneath the two towers are the pivot and drive shafts and hydraulic operating machinery. Beneath the main pivot shafts are 6no. mud tanks; 3no. on the north side and 3no. on the south. The tanks serve to collect rainwater, surface run-off, and debris from the bascule arms when raised, to prevent them entering the chambers below. Currently, they regularly block up and overflow, and must be manually monitored and emptied. A condition survey was undertaken in 2017 which identified that all the mud tanks are in poor condition with significant corrosion identified, and without exception all require repair to some extent. Each mud tank consists of a front and rear chamber. The rear chambers will be assessed and repaired in situ. The front chambers will be cut out and replaced with a new mild steel chamber with deeper profile, improving the water storing capacity and providing adequate spatial clearanceto moving parts of the bridge. Both chambers will be protected with new GRP lining. Discharge pipework will need alteration and reconnection to the revised tank chambers. Each mud tank will receive new GRP mesh deck hinged covers, to prevent larger debris/detritus entering the tanks/chambers and causing blockages, while still permitting water/runoff to reach the tanks. Beneath each mud tank lies a platform of original timber planks spanning the bascule chamber. This platform is currently inaccessible due to structural degradation (rot) caused by water overflow from the tanks above. A specialist contractor will assess the strength and condition of the timber planks. If they are deemed sufficient for maintenance loads, the planks will be restored and reused, while damaged/rotten planks and the timber kerb will be replaced. Each mud tank bay will also receive new handrails/guardrails to promote safer access, improved LED lighting (mixture of replacement and new/additional), new small power provision, and corrosion treatment/repainting.

Planning Information

As part of our early market engagement, we contacted seven potential suppliers by email on 18th February 2025. The communication included a document outlining the proposed scope of the requirement, the estimated contract value, required insurance levels, and the intended form of contract. Suppliers were given one week to respond with expressions of interest. Of the seven suppliers contacted, three confirmed their interest in participating, two declined, and two did not respond. The purpose of this engagement was to assess market interest and gather initial feedback on the proposed approach. From the responses received, suppliers indicated that the form of contract and the specified insurance levels were broadly appropriate and did not present barriers to participation.

Notice Details

Publication & Lifecycle

Open Contracting ID
ocds-h6vhtk-050349
Publication Source
Find A Tender Service
Latest Notice
https://www.find-tender.service.gov.uk/Notice/016199-2025
Current Stage
Tender
All Stages
Planning, Tender

Procurement Classification

Notice Type
UK4 - Tender Notice
Procurement Type
Standard
Procurement Category
Works
Procurement Method
Open
Procurement Method Details
Below threshold - open competition
Tender Suitability
SME, VCSE
Awardee Scale
Not specified

Common Procurement Vocabulary (CPV)

CPV Divisions

45 - Construction work

CPV Codes

45221100 - Construction work for bridges

Notice Value(s)

Tender Value
£1,400,000 £1M-£10M
Lots Value
£1,400,000 £1M-£10M
Awards Value
Not specified
Contracts Value
Not specified

Notice Dates

Publication Date
22 Apr 202510 months ago
Submission Deadline
27 May 2025Expired
Future Notice Date
22 Apr 2025Expired
Award Date
Not specified
Contract Period
8 Jul 2025 - 5 Dec 2025 1-6 months
Recurrence
Not specified

Notice Status

Tender Status
Active
Lots Status
Active
Awards Status
Not Specified
Contracts Status
Not Specified

Buyer & Supplier

Contracting Authority (Buyer)

Main Buyer
THE MAYOR AND COMMONALTY AND CITIZENS OF THE CITY OF LONDON
Contact Name
Not specified
Contact Email
jemma.borland@cityoflondon.gov.uk
Contact Phone
020 7606 3030

Buyer Location

Locality
CITY OF LONDON
Postcode
EC2P 2EJ
Post Town
Central London
Country
England
Major Region (ITL 1)
TLI London
Basic Region (ITL 2)
TLI4 Inner London - East
Small Region (ITL 3)
TLI43 Haringey and Islington
Delivery Location
TLI London
Local Authority
Islington
Electoral Ward
Clerkenwell
Westminster Constituency
Islington South and Finsbury

Further Information

Notice Documents

Open Contracting Data Standard (OCDS)

View full OCDS Record for this contracting process

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The Open Contracting Data Standard (OCDS) is a framework designed to increase transparency and access to public procurement data in the public sector. It is widely used by governments and organisations worldwide to report on procurement processes and contracts. 

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