---
title: "Nant y Mwyn 25-26 Scour Protection Works"
ocid: "ocds-h6vhtk-058ec4"
canonical_url: "https://d3tenders.com/contract/?ocid=ocds-h6vhtk-058ec4"
markdown_url: "https://d3tenders.com/contract/ocds-h6vhtk-058ec4.md"
json_url: "https://d3tenders.com/contract/ocds-h6vhtk-058ec4.json"
source: "Find A Tender Service"
current_stage: "Award"
buyer: "MINING REMEDIATION AUTHORITY"
published: "2026-04-03"
---

# Nant y Mwyn 25-26 Scour Protection Works

Buyer: MINING REMEDIATION AUTHORITY  
Current stage: Award  
OCID: ocds-h6vhtk-058ec4

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## Summary

The Mining Remediation Authority, a public authority within central government, has completed the Nant y Mwyn 25-26 Scour Protection Works in Carmarthenshire, Wales. This project aimed to implement various erosion control measures, including rock-filled rolls, geotextile matting, and wooden stakes to prevent the mobilisation of metal-rich spoil into the Nant y Bai watercourse. The tender process concluded with SANCTUS LIMITED securing the contract, valued at approximately £151,416, following an open competition under a below-threshold procurement. The contract, signed on 14 February 2026, stipulates a plan period from 16 February to 29 May 2026, with a potential extension due to adverse weather conditions. This falls within the "works" category under CPV classification 45112450, focusing on excavation work at archaeological sites.

This tender creates substantial business growth opportunities for SME contractors specialising in environmental protection and civil engineering projects. The procurement method ensures local enterprises with expertise in archaeological site excavation and environmentally conscious construction can engage with the Mining Remediation Authority's ecological and heritage-sensitive site requirements. Businesses adept in innovative scour protection and slope stabilisation techniques are well-positioned to contribute valuable design methodologies and technological solutions, potentially reducing local ecological disruption and preserving historical mining artefacts alongside the integration of Purple Moor grass translocation and temporary river flow diversion measures. With ongoing government commitments to environmental remediation, similar projects may offer future collaboration prospects for skilled suppliers.

## Notice

The purpose of these works is to prevent the Nant y Bai watercourse from continuing to scour (causing active erosion of) spoil heaps that make up its banks and causing mobilisation of metal-rich spoil into the watercourse. It is proposed to install a mixture of scour protection interventions including rock filled rolls and bags, geotextile matting and wooden stakes at a number of discrete areas along the bank to stabilise the spoil and prevent ongoing erosion by the Nant y Bai. We would welcome input from the Contractor regarding current design methodology based on previous experiences. The Works comprise the following: * Install scour protection measures in accordance with the drawings; * Install slope stabilisation measures in accordance with the drawings; * Supply and install 150No. rock filled bags as specified on the drawings and as directed on site to provide scour protection in Areas 3, 5 and 6; * Translocate Purple Moor grass into the working area in accordance with the drawings. The source of Purple Moor grass to be agreed with the ecological supervisor but shall be within the Site; * Install silt traps in accordance with the drawings; * Install an overland pipe with associated capture structure and outfall structure in accordance with the drawings; * Deliver plant and materials along designated routes to limit impact on the protected ecology and provide any equipment necessary to minimize the impact on the designated routes. This may include helicopters to aid in load lifting and placement of rock roll bags; and * Plan and execute temporary flow diversion measures to enable the Works in the river bed to be completed. The Works must be carried out, including transportation of plant and materials, in a way that: * Does not cause undue harm to the local ecology, including plants, trees and particularly the protected Calaminarian habitats (comprising metallophyte flowering and non-flowering plant species); * Does not damage local heritage features, including historic mining structures and artefacts; * Does not cause undue disruption to the local community; * Does not cause damage to existing services; * Does not cause damage to the forest track road, * Is in accordance with the relevant Environmental Action Plan (EAP) as prepared by the Mining Remediation Authority and agreed with NRW.

### Planning Information

We are seeking to understand the nature of the market for our requirement and encourage contact from interested parties to help us finalise our procurement strategy.
We have a time sensitive requirement to construct scour protection along a stream at a former mine site.
The location for this work is in a remote part of Wales in Carmarthenshire.
If you are interested in this potential opportunity or would be interested in more details please contact us.
Natalie Earnshaw- Assistant Procurement Business Partner
natalie.earnshaw@miningremediation.gov.uk

## Key Details

| Field | Value |
| --- | --- |
| Publication source | Find A Tender Service |
| Latest notice | https://www.find-tender.service.gov.uk/Notice/031184-2026 |
| Notice type | UK7 - Contract Details Notice |
| Procurement type | Standard |
| Procurement category | Works |
| Procurement method | Open |
| Procurement method details | Below threshold - open competition |
| Tender suitability | SME |
| Awardee scale | SME |
| All stages | Planning, Tender, Award |

## Dates

| Field | Value |
| --- | --- |
| Publication date | 3 Apr 2026 |
| Submission deadline | 5 Dec 2025 |
| Future notice date | 12 Sep 2025 |
| Award date | 29 Jan 2026 |
| Contract period | 16 Feb 2026 - 29 May 2026 |
| Recurrence | Not specified |

## Values

| Field | Value |
| --- | --- |
| Tender value | £100,000 |
| Lots value | £100,000 |
| Awards value | £151,415 |
| Contracts value | £151,415 |

## Status

| Field | Value |
| --- | --- |
| Tender status | Complete |
| Lots status | Complete |
| Awards status | Active |
| Contracts status | Active |

## Buyer

| Field | Value |
| --- | --- |
| Main buyer | MINING REMEDIATION AUTHORITY |
| Locality | NOTTINGHAMSHIRE |
| Post town | Nottingham |
| Postcode | NG18 4RG |
| Country | England |
| ITL 1 | TLF East Midlands (England) |
| ITL 2 | TLF1 Derbyshire and Nottinghamshire |
| ITL 3 | TLF15 North Nottinghamshire |
| Local authority | Mansfield |
| Electoral ward | Berry Hill |
| Westminster constituency | Mansfield |
| Delivery location | TLL Wales |

## Supplier

| Field | Value |
| --- | --- |
| Number of suppliers | 1 |
| Supplier names | SANCTUS |

## CPV Codes

### Divisions

- 45 - Construction work

### Codes

- 45112450 - Excavation work at archaeological sites

## Release History

- 3 Apr 2026 at 05:08 - Award - UK7 - Contract Details Notice - https://www.find-tender.service.gov.uk/Notice/031184-2026
- 30 Jan 2026 at 11:40 - Award - UK6 - Contract Award Notice - https://www.find-tender.service.gov.uk/Notice/008381-2026
- 7 Nov 2025 at 13:40 - Tender - UK4 - Tender Notice - https://www.find-tender.service.gov.uk/Notice/072053-2025
- 27 Aug 2025 at 14:54 - Planning - UK2 - Preliminary Market Engagement Notice - https://www.find-tender.service.gov.uk/Notice/051678-2025

## Documents

- https://www.find-tender.service.gov.uk/Notice/031184-2026
  3rd April 2026 - Contract details notice on Find a Tender
- https://www.find-tender.service.gov.uk/Notice/008381-2026
  30th January 2026 - Contract award notice on Find a Tender
- https://www.find-tender.service.gov.uk/Notice/072053-2025
  7th November 2025 - Tender notice on Find a Tender
- https://www.find-tender.service.gov.uk/Notice/051678-2025
  27th August 2025 - Preliminary market engagement notice on Find a Tender
- https://www.find-tender.service.gov.uk/Notice/Attachment/A-7517
  Invitation to Tender document providing all information for parties considering whether to participate in this opportunity

## Notice URLs

- http://Inbye.coal.gov.uk/s2c/
- http://www.sanctusltd.com
- 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-058ec4. The underlying structured data is available as OCDS JSON at https://d3tenders.com/contract/ocds-h6vhtk-058ec4.json.