--- title: "Tower Bridge Mud Tanks" ocid: "ocds-h6vhtk-050349" canonical_url: "https://d3tenders.com/contract/?ocid=ocds-h6vhtk-050349" markdown_url: "https://d3tenders.com/contract/ocds-h6vhtk-050349.md" json_url: "https://d3tenders.com/contract/ocds-h6vhtk-050349.json" source: "Find A Tender Service" current_stage: "Tender" buyer: "THE MAYOR AND COMMONALTY AND CITIZENS OF THE CITY OF LONDON" published: "2025-04-22" --- # Tower Bridge Mud Tanks Buyer: THE MAYOR AND COMMONALTY AND CITIZENS OF THE CITY OF LONDON Current stage: Tender OCID: ocds-h6vhtk-050349 [View canonical contract page](https://d3tenders.com/contract/?ocid=ocds-h6vhtk-050349) [Download OCDS JSON](https://d3tenders.com/contract/ocds-h6vhtk-050349.json) ## Summary 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. ## Notice 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. ## Key Details | Field | Value | | --- | --- | | Publication source | Find A Tender Service | | Latest notice | https://www.find-tender.service.gov.uk/Notice/016199-2025 | | 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 | | All stages | Planning, Tender | ## Dates | Field | Value | | --- | --- | | Publication date | 22 Apr 2025 | | Submission deadline | 27 May 2025 | | Future notice date | 22 Apr 2025 | | Award date | Not specified | | Contract period | 8 Jul 2025 - 5 Dec 2025 | | Recurrence | Not specified | ## Values | Field | Value | | --- | --- | | Tender value | £1,400,000 | | Lots value | £1,400,000 | | Awards value | Not specified | | Contracts value | Not specified | ## Status | Field | Value | | --- | --- | | Tender status | Active | | Lots status | Active | | Awards status | Not specified | | Contracts status | Not specified | ## Buyer | Field | Value | | --- | --- | | Main buyer | THE MAYOR AND COMMONALTY AND CITIZENS OF THE CITY OF LONDON | | Locality | CITY OF LONDON | | Post town | Central London | | Postcode | EC2P 2EJ | | Country | England | | ITL 1 | TLI London | | ITL 2 | TLI4 Inner London - East | | ITL 3 | TLI43 Haringey and Islington | | Local authority | Islington | | Electoral ward | Clerkenwell | | Westminster constituency | Islington South and Finsbury | | Delivery location | TLI London | ## CPV Codes ### Divisions - 45 - Construction work ### Codes - 45221100 - Construction work for bridges ## Release History - 22 Apr 2025 at 11:09 - Tender - UK4 - Tender Notice - https://www.find-tender.service.gov.uk/Notice/016199-2025 - 15 Apr 2025 at 13:32 - Planning - UK2 - Preliminary Market Engagement Notice - https://www.find-tender.service.gov.uk/Notice/015272-2025 ## Documents - https://www.find-tender.service.gov.uk/Notice/016199-2025 22nd April 2025 - Tender notice on Find a Tender - https://www.find-tender.service.gov.uk/Notice/015272-2025 15th April 2025 - Preliminary market engagement notice on Find a Tender ## Notice URLs - https://cityoflondon.ukp.app.jaggaer.com - https://www.cityoflondon.gov.uk - https://www.legislation.gov.uk/ukpga/2023/54/contents ## Provenance This Markdown file is an alternate public rendering of the D3 Tenders contract record. The canonical page is https://d3tenders.com/contract/?ocid=ocds-h6vhtk-050349. The underlying structured data is available as OCDS JSON at https://d3tenders.com/contract/ocds-h6vhtk-050349.json.