Integrated Security Solutions (ISS) Works at Walham and Pentir
This tender closed on 19 October 2026.
- Buyer
- NATIONAL GRID ELECTRICITY TRANSMISSION PLC
- Value
- £21,000,000
- Closed
- 19 October 2026
- Where
- London, the South West
- Type
- Open tender
In plain English
National Grid Electricity Transmission is hiring a security contractor to design and build an integrated security system at two power infrastructure sites: Walham in Gloucestershire and Pentir in Gwynedd, Wales. You can bid for one or both sites, but you can only win one. The contract is worth around £21 million.
What the buyer wants
• Design, install and commission a complete integrated security solution (access control, CCTV, perimeter security, alarms, monitoring) at a critical national infrastructure electricity transmission site • Provide experienced security engineering and project management to deliver the system to time and budget • Ensure the security system meets National Grid's specifications and regulatory requirements for protecting critical national infrastructure
Lots
- Lot 1. ISS Walham, Gloucestershire
- Lot 2. ISS Pentir, Gwynedd
Requirements
What could rule a small business out: Most small businesses will be excluded because this is a £21 million integrated security systems contract requiring proven expertise on critical national infrastructure projects, security clearance capability, substantial balance sheet, and likely bonding/parent company guarantees that individual traders or micro-firms cannot meet.
Always check the tender documents.
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