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ISS Works at Walham and Pentir

National Grid Electricity Transmission plc · Private utility

In brief

National Grid Electricity Transmission plc has announced plans to buy security and construction work. This is an early notice: there is nothing to bid on yet, but it tells you a tender may follow.

The notice does not state a value.

The contract runs for 1 year, starting 26 February 2027.

It is split into 2 lots, so a supplier can bid for part of the work.

Built from the notice's own fields. Always check the official notice before you bid.

Can I win this?

Key dates

Express interest by
5pm, Wednesday 7 October 2026

This is the first stage. You register interest now, and shortlisted suppliers are invited to bid later.

Competition

Usually high: a median of 9 bids per contract for security contracts across the UK (from 321 awards in the last 12 months).

Tender documents

What the notice says

National Grid Electricity Transmission Plc is seeking an experienced and suitably qualified suppliers capable of delivering a fully integrated security solution for critical national infrastructure sites at Walham and Pentir.

How to bid

  1. Read the full notice on Find a Tender, including any tender documents it links to.
  2. Register your organisation on the Central Digital Platform (through Find a Tender) if you have not already. Suppliers need to be registered to take part in procurements under the Procurement Act 2023.
  3. Follow the submission instructions in the notice; it does not name an e-tendering portal.
  4. Register your interest before 5pm, Wednesday 7 October 2026. Shortlisted suppliers are then invited to bid.

Lots

LotTradeValue
ISS Walham, Gloucestershire
26 February 2027 to 25 February 2028
What this lot covers

National Grid Electricity Transmission Plc is seeking an experienced and suitably qualified supplier capable of delivering a fully integrated security solution for a critical national infrastructure site at Walham.

Security, Construction, Electrical, Fire safety, Management consultancy—
ISS Pentir, Gwynedd
26 February 2027 to 25 February 2028
What this lot covers

National Grid Electricity Transmission Plc is seeking an experienced and suitably qualified supplier capable of delivering a fully integrated security solution for a critical national infrastructure site at Pentir.

Security, Construction, Electrical, Fire safety, Management consultancy—

Timeline

  1. Planned procurement notice · UK3, notice 078250-2026

About the buyer

National Grid Electricity Transmission plcLast 12 months

Procurements

14

Awards

5
All tenders and awards from National Grid Electricity Transmission plc

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From notice 078250-2026 on Find a Tender, first published 17 August 2026. We last checked for changes on 28 September 2026.