---
title: "Supply of Public Key Infrastructure (PKI) Hardware Appliance"
ocid: "ocds-b5fd17-4f417089-d0ae-45e8-994c-08631734cf3a"
canonical_url: "https://d3tenders.com/contract/?ocid=ocds-b5fd17-4f417089-d0ae-45e8-994c-08631734cf3a"
markdown_url: "https://d3tenders.com/contract/ocds-b5fd17-4f417089-d0ae-45e8-994c-08631734cf3a.md"
json_url: "https://d3tenders.com/contract/ocds-b5fd17-4f417089-d0ae-45e8-994c-08631734cf3a.json"
source: "Contracts Finder"
current_stage: "Tender"
buyer: "UNITE PROCUREMENT UK LIMITED"
published: "2026-02-23"
---

# Supply of Public Key Infrastructure (PKI) Hardware Appliance

Buyer: UNITE PROCUREMENT UK LIMITED  
Current stage: Tender  
OCID: ocds-b5fd17-4f417089-d0ae-45e8-994c-08631734cf3a

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## Summary

Unite Procurement UK Limited, representing the Ministry of Defence, is seeking suppliers for the provision of Public Key Infrastructure (PKI) Hardware Appliance. The procurement process, managed through the selective method as a catalogue purchase, is currently in the tender stage. The contract, valued at £340,000, entails supplying appliance hardware and licensing for a PKI platform, beginning on 17 March 2026 and concluding on 17 March 2030. Located in the United Kingdom, this goods procurement falls under the "Direct-access storage devices" industry category. The tender period ends on 16 March 2026, providing a significant opportunity for interested suppliers to express their interest by contacting Unite Procurement UK Limited.

This tender presents a substantial business growth opportunity, particularly for small and medium-sized enterprises (SMEs) and voluntary, community and social enterprises (VCSEs). Engaging in this tender could enable companies capable of delivering robust PKI solutions and hardware appliances to enter or expand within the defence sector. With the Ministry's focus on maintaining a dynamic and responsive supplier network, companies with expertise in certificate authority functions, high-availability systems, and secure hardware configurations will find this procurement particularly aligning with their capabilities, enabling them to establish or strengthen collaborations with UK public sector organisations.

## Notice

Supply of Public Key Infrastructure (PKI) Hardware Appliance Unite Procurement UK Limited (part of Unite Holding SE), on behalf of the Ministry of Defence, is seeking suppliers to join the Unite Procurement Platform to support the supply of Public Key Infrastructure (PKI) Hardware Appliance. The Unite Procurement Platform (Unite | Simplify indirect procurement with our smarter platform) offers a compliant route to market for UK Public Sector organisations to manage low-value, high-volume procurement. Description of Requirements PKI Platform * Full Certificate Authority (CA), Registration Authority (RA), and Validation Authority (VA) functions * Support for X.509 certificate issuance across classified and unclassified domains * Compatibility with industry-standard enrolment protocols (SCEP, EST, ACME, CMP) * Integration with Microsoft AD Certificate Auto Enrollment * API-based integration (REST and web services) Appliance Hardware * Secure, hardened rack mount appliance * Redundant SSDs * Redundant power supplies * ECC or equivalent error tolerant memory * Defence grade hardening and assurance High Availability & Scalability * Support for multi node, geographically distributed resilience * Real time replication and clustering * Scalable certificate capacity (minimum 2,500 certificates, with growth to millions) Management & Security * Web-based administrative interface appropriate for restricted environments * Full audit logs and compliance reporting * Secure update mechanism * Backup and disaster recovery functionality * Alignment with MOD security policies and Zero Trust initiatives Contract Scope * Supply of appliance(s) * PKI platform licensing * HSM capability * Implementation, integration, and configuration * Ongoing support and maintenance How to Apply Interested suppliers should register their interest by contacting Unite Procurement UK Limited and provide details of their product range, modification capabilities, and maintenance services. Further information on the onboarding process for the Unite Procurement Platform will be provided upon expression of interest and can also be found at the link attached. Unite Procurement UK Limited does not intend to appoint a sole supplier for this requirement. Instead, multiple suppliers may be onboarded to the Unite Procurement Platform to ensure a diverse and competitive supply base, supporting flexibility and choice for the Ministry of Defence and associated organisations. Suppliers are encouraged to express their interest by the stated closing date to ensure early consideration. However, applications to join the Unite Procurement Platform will be welcome at any time beyond the initial deadline. Unite Procurement UK Limited reserves the right to review and onboard new suppliers on a rolling basis to meet evolving requirements and to maintain a dynamic and responsive supplier network. For any enquiries an interest, please email defence.support@unite.eu with the subject title ''TSS 584 ''

## Key Details

| Field | Value |
| --- | --- |
| Publication source | Contracts Finder |
| Latest notice | https://www.contractsfinder.service.gov.uk/Notice/e330af98-b726-4b53-9872-deb637ceab5e |
| Notice type | Tender Notice |
| Procurement type | Standard |
| Procurement category | Goods |
| Procurement method | Selective |
| Procurement method details | Catalogue purchase |
| Tender suitability | SME, VCSE |
| Awardee scale | Not specified |
| All stages | Tender |

## Dates

| Field | Value |
| --- | --- |
| Publication date | 23 Feb 2026 |
| Submission deadline | 16 Mar 2026 |
| Future notice date | Not specified |
| Award date | Not specified |
| Contract period | 17 Mar 2026 - 17 Mar 2030 |
| Recurrence | Not specified |

## Values

| Field | Value |
| --- | --- |
| Tender value | £340,000 |
| Lots value | Not specified |
| Awards value | Not specified |
| Contracts value | Not specified |

## Status

| Field | Value |
| --- | --- |
| Tender status | Active |
| Lots status | Not specified |
| Awards status | Not specified |
| Contracts status | Not specified |

## Buyer

| Field | Value |
| --- | --- |
| Main buyer | UNITE PROCUREMENT UK LIMITED |
| Locality | LONDON |
| Post town | Central London |
| Postcode | WC2B 5AH |
| Country | England |
| ITL 1 | TLI London |
| ITL 2 | TLI3 Inner London - West |
| ITL 3 | TLI36 Camden |
| Local authority | Camden |
| Electoral ward | Holborn & Covent Garden |
| Westminster constituency | Holborn and St Pancras |
| Delivery location | Not specified |

## CPV Codes

### Divisions

- 30 - Office and computing machinery, equipment and supplies except furniture and software packages

### Codes

- 30233140 - Direct-access storage devices (DASD)

## Release History

- 23 Feb 2026 at 09:21 - Tender - Tender Notice - https://www.contractsfinder.service.gov.uk/Notice/e330af98-b726-4b53-9872-deb637ceab5e

## Documents

- https://www.contractsfinder.service.gov.uk/Notice/e330af98-b726-4b53-9872-deb637ceab5e
  23rd February 2026 - Opportunity notice on Contracts Finder

## 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-b5fd17-4f417089-d0ae-45e8-994c-08631734cf3a. The underlying structured data is available as OCDS JSON at https://d3tenders.com/contract/ocds-b5fd17-4f417089-d0ae-45e8-994c-08631734cf3a.json.