---
title: "L3/L4 Substation works"
ocid: "ocds-h6vhtk-06da16"
canonical_url: "https://d3tenders.com/contract/?ocid=ocds-h6vhtk-06da16"
markdown_url: "https://d3tenders.com/contract/ocds-h6vhtk-06da16.md"
json_url: "https://d3tenders.com/contract/ocds-h6vhtk-06da16.json"
source: "Find A Tender Service"
current_stage: "Tender"
buyer: "SCIENCE MUSEUM GROUP"
published: "2026-08-03"
---

# L3/L4 Substation works

Buyer: SCIENCE MUSEUM GROUP  
Current stage: Tender  
OCID: ocds-h6vhtk-06da16

[View canonical contract page](https://d3tenders.com/contract/?ocid=ocds-h6vhtk-06da16)  
[Download OCDS JSON](https://d3tenders.com/contract/ocds-h6vhtk-06da16.json)

## Summary

The Science Museum Group, a central government public authority based in London, is inviting tenders for the "L3/L4 Substation Works" project. This procurement process, currently in the tender phase, involves upgrading and replacing the DSS04 transformer at the Science and Innovation Park in Wroughton, Swindon. The procurement falls under the industry categories of substation construction and electrical installation of transformers, with a total contract value estimated at £364,800. Interested parties must submit their proposals by 21st August 2026, with any enquiries due by 14th August 2026. The open competition method allows all eligible bidders to participate electronically via the given submission platform.

This tender represents a significant opportunity for businesses specialising in substation construction and electrical installations to expand their portfolio and enhance their reputation by working on a high-profile project with the esteemed Science Museum Group. Small to medium-sized enterprises that focus on providing efficient and compliant substation and transformer works, particularly those with experience in fulfilling government contracts, would find this tender beneficial. Furthermore, the contract's below-threshold nature means that it is well-suited for companies seeking to engage with public procurement processes without the high barriers typically associated with larger contracts.

## Notice

SMG wishes to award a contract for the provision of L3/L4 Substation Upgrade Works (DSS04) at the Science and Innovation Park, Hackpen Lane, Wroughton, Swindon. The Agreement concerns below threshold works comprising the replacement and upgrade of DSS04 transformer and associated substation compliance works. Please see Section 3: Specification for further information about this requirement.

## Key Details

| Field | Value |
| --- | --- |
| Publication source | Find A Tender Service |
| Latest notice | https://www.find-tender.service.gov.uk/Notice/073297-2026 |
| Notice type | UK4 - Tender Notice |
| Procurement type | Standard |
| Procurement category | Works |
| Procurement method | Open |
| Procurement method details | Below threshold - open competition |
| Tender suitability | Not specified |
| Awardee scale | Not specified |
| All stages | Tender |

## Dates

| Field | Value |
| --- | --- |
| Publication date | 3 Aug 2026 |
| Submission deadline | 21 Aug 2026 |
| Future notice date | Not specified |
| Award date | Not specified |
| Contract period | 31 Aug 2026 - 27 Nov 2026 |
| Recurrence | Not specified |

## Values

| Field | Value |
| --- | --- |
| Tender value | £170,000 |
| Lots value | £170,000 |
| 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 | SCIENCE MUSEUM GROUP |
| Locality | LONDON |
| Post town | South West London |
| Postcode | SW7 2DD |
| Country | England |
| ITL 1 | TLI London |
| ITL 2 | TLI3 Inner London - West |
| ITL 3 | TLI33 Kensington & Chelsea and Hammersmith & Fulham |
| Local authority | Kensington and Chelsea |
| Electoral ward | Brompton & Hans Town |
| Westminster constituency | Kensington and Bayswater |
| Delivery location | Not specified |

## CPV Codes

### Divisions

- 45 - Construction work

### Codes

- 45232220 - Substation construction work
- 45317200 - Electrical installation work of transformers

## Release History

- 3 Aug 2026 at 14:32 - TenderUpdate - UK4 - Tender Notice - https://www.find-tender.service.gov.uk/Notice/073297-2026
- 3 Aug 2026 at 13:28 - Tender - UK4 - Tender Notice - https://www.find-tender.service.gov.uk/Notice/073229-2026

## Documents

- https://www.find-tender.service.gov.uk/Notice/073297-2026
  3rd August 2026 - Tender notice on Find a Tender
- https://www.find-tender.service.gov.uk/Notice/073229-2026
  3rd August 2026 - Tender notice on Find a Tender

## Notice URLs

- https://in-tendhost.co.uk/sciencemuseumgroup/aspx/Home
- 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-06da16. The underlying structured data is available as OCDS JSON at https://d3tenders.com/contract/ocds-h6vhtk-06da16.json.