Skip to content
Tenderpatch

Integrated Security Solutions (ISS) Works at Walham and Pentir

NATIONAL GRID ELECTRICITY TRANSMISSION PLC

Open Interest closes in 3 days

Key facts

Deadline to express interest or request to participate
Monday 19 October 2026, 23:59 (UK time) Interest closes in 3 days
Buyer's estimated value
£21,000,000 (excl. VAT) The buyer's own estimate, not income to you.
Contract period
16 May 2027 to 14 Jan 2028
Procedure
Competitive flexible procedure
Notice type
Tender notice (UK4)

Decision brief

Taken from the buyer's published notice (shown as written, shortened where long). Tenderpatch has not added to or interpreted it. Always read the official documents before bidding.

How bids will be scored

Lot 1

  • Technical 75%
  • Commercial 25%

Lot 2

  • Technical 75%
  • Commercial 25%
Conditions of participation (what you must show)

economic Suppliers may be required to demonstrate that they have the legal and financial capacity to perform the contract. This will include demonstrating sufficient financial standing, taking account of the nature, complexity, value, duration and risk profile of the contract, and an ability to meet all applicable legal, statutory and regulatory requirements relevant to its performance. The detailed conditions of participation, supporting evidence requirements, assessment methodology and any applicable minimum thresholds will be set out in the Instructions to Tenderers and associated procurement documentation made available to Tenderers on ARIBA.

technical Suppliers will be required to demonstrate the technical ability, relevant experience, competent resources, systems and organisational capability necessary to perform the contract. This includes meeting National Grid's applicable standard supplier requirements and all project-specific technical requirements. The detailed conditions of participation, supporting evidence requirements, assessment methodology and any applicable minimum thresholds will be set out in the Instructions to Tenderers and associated procurement documentation made available to Tenderers on ARIBA. References to particular qualifications, accreditations or standards include permitted equivalents.

other There is no maximum number of suppliers invited to participate in Stage 1: Prequalification. There will be a maximum number of suppliers invited to Stage 2: Request to Participate. The criteria used to select suppliers will be set out in the procurement documentation issued via Ariba. This stage will include additional pass/fail questions, followed by more detailed scored questions that will be used to assess and rank suppliers. Only the highest-ranking suppliers, up to the specified maximum number, will be invited to progress.

Contract length and extensions
16 May 2027 to 14 Jan 2028. Options: The Contract is based on the NEC4 ECC form of contract, which includes the right for the Project Manager to issue instructions to the Contractor which may have the impact of changing Key Dates/Completion Dates/the total of the Prices. Not all such instructions constitute modifications within the me…
How to submit
Suppliers wishing to participate in this opportunity should complete the Expression of Interest link. Suppliers are requested to register their interest 16th October 2026 to enable Ariba onboarding and secure access to the documents. Registration is an administrative access step and is not an evalu… Open service.ariba.com ↗ Electronic submission: allowed.
New to public tenders? Plain-English guide to this page
Framework
An agreement that sets terms for work the buyer may order later, often from several suppliers. The value shown usually covers the whole agreement, not one job.
Open for bids / closing date
You must submit by the closing date and time, normally through the buyer's own online portal. Late bids are normally refused.
Clarification questions
A deadline for asking the buyer questions about the tender. It is earlier than the closing date.
Conditions of participation
What the buyer asks suppliers to show before they can be considered, such as experience, insurance or accreditations.
Bids are scored on
How the buyer will compare bids, usually a split between price and quality. A 60/40 split in favour of quality means the cheapest bid will not necessarily win.
Lots
A tender can be split into parts. You can often bid for only the lots that suit you.
Area (ITL)
The buyer names an official statistical area for where the work is, not a street address. Check the tender documents for the actual sites.
UK4 and other notice codes
Official codes for the type of notice. A "tender notice" means bids are being invited.

General explanations written by Tenderpatch, not part of this notice.

Description

National Grid Electricity Transmission Plc is seeking experienced and suitably qualified suppliers capable of delivering a fully integrated security solution for critical national infrastructure sites at Walham and Pentir. The requirement is divided into two separate Lots: Lot 1 (Walham) and Lot 2 (Pentir). Suppliers may submit tenders for one or both Lots; however, no supplier will be awarded more than one Lot. Further details in relation to the scope are set out in the Instructions to Tenderers.

Lots (2)

  1. Lot 1: Lot 1. ISS Walham, Gloucestershire

    Value: £9,000,000 (excl. VAT)

    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.

  2. Lot 2: Lot 2. ISS Pentir, Gwynedd

    Value: £12,000,000 (excl. VAT)

    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.