---
title: "MNO Migration Architecture and Engineering"
ocid: "ocds-b5fd17-26c85b8a-7069-4f6c-bcd3-e120fa12d051"
canonical_url: "https://d3tenders.com/contract/?ocid=ocds-b5fd17-26c85b8a-7069-4f6c-bcd3-e120fa12d051"
markdown_url: "https://d3tenders.com/contract/ocds-b5fd17-26c85b8a-7069-4f6c-bcd3-e120fa12d051.md"
json_url: "https://d3tenders.com/contract/ocds-b5fd17-26c85b8a-7069-4f6c-bcd3-e120fa12d051.json"
source: "Contracts Finder"
current_stage: "Award"
buyer: "MINISTRY OF DEFENCE"
published: "2026-01-28"
---

# MNO Migration Architecture and Engineering

Buyer: MINISTRY OF DEFENCE  
Current stage: Award  
OCID: ocds-b5fd17-26c85b8a-7069-4f6c-bcd3-e120fa12d051

[View canonical contract page](https://d3tenders.com/contract/?ocid=ocds-b5fd17-26c85b8a-7069-4f6c-bcd3-e120fa12d051)  
[Download OCDS JSON](https://d3tenders.com/contract/ocds-b5fd17-26c85b8a-7069-4f6c-bcd3-e120fa12d051.json)

## Summary

The public procurement process titled "MNO Migration Architecture and Engineering" involves the Ministry of Defence as the buying organisation, focusing on computer-related professional services. The location for the services is the United Kingdom, with key procurement stages already completed, including the award stage on 30th November 2025. The contract spans from 1st December 2025 to 31st March 2026. The tender follows a selective procurement method, calling off from a framework agreement, and targets the main procurement category of services. This initiative aims to tackle delays in the Defence sector's migration to Windows 11, requiring alignment of several contracts.

This tender presents opportunities for small and medium-sized enterprises (SMEs) to participate in resolving technical and security issues related to the migration project. Businesses with expertise in computer-related professional services would be well-suited to compete, particularly those that can offer innovative solutions to support the realignment and delivery against new schedules. Rockstone Technologies Ltd has been awarded the contract, highlighting business growth potential through government contracts in the defence sector. This procurement process paves the way for businesses capable of delivering large-scale IT solutions to enhance their portfolio and strengthen ties with government entities.

## Notice

The rollout and migration of the Official user base across the whole of Defence for Windows 11 has been delayed by circa 3 months while the team have investigated and resolved several technical and security issues impacting Win11 users. Contracts linked to the migration were pivoted to help resolve these issues, not that migration has restarted, EUS are having to re-align several contracts and deliverables against the new rollout schedule.

## Key Details

| Field | Value |
| --- | --- |
| Publication source | Contracts Finder |
| Latest notice | https://www.contractsfinder.service.gov.uk/Notice/b14d7595-aabc-41cc-8fe5-935932b69972 |
| Notice type | Award Notice |
| Procurement type | Framework |
| Procurement category | Services |
| Procurement method | Selective |
| Procurement method details | Call-off from a framework agreement |
| Tender suitability | SME |
| Awardee scale | SME |
| All stages | Award |

## Dates

| Field | Value |
| --- | --- |
| Publication date | 28 Jan 2026 |
| Submission deadline | 30 Nov 2025 |
| Future notice date | Not specified |
| Award date | 30 Nov 2025 |
| Contract period | 1 Dec 2025 - 31 Mar 2026 |
| Recurrence | Not specified |

## Values

| Field | Value |
| --- | --- |
| Tender value | £1,094,337 |
| Lots value | Not specified |
| Awards value | £1,094,337 |
| Contracts value | Not specified |

## Status

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

## Buyer

| Field | Value |
| --- | --- |
| Main buyer | MINISTRY OF DEFENCE |
| Locality | LONDON |
| Post town | South West London |
| Postcode | SW1A 2HB |
| Country | England |
| ITL 1 | TLI London |
| ITL 2 | TLI3 Inner London - West |
| ITL 3 | TLI35 Westminster and City of London |
| Local authority | Westminster |
| Electoral ward | St James's |
| Westminster constituency | Cities of London and Westminster |
| Delivery location | Not specified |

## Supplier

| Field | Value |
| --- | --- |
| Number of suppliers | 1 |
| Supplier names | ROCKSTONE TECHNOLOGIES |

## CPV Codes

### Divisions

- 72 - IT services: consulting, software development, Internet and support

### Codes

- 72590000 - Computer-related professional services

## Release History

- 28 Jan 2026 at 09:57 - Award - Award Notice - https://www.contractsfinder.service.gov.uk/Notice/b14d7595-aabc-41cc-8fe5-935932b69972

## Documents

- https://www.contractsfinder.service.gov.uk/Notice/b14d7595-aabc-41cc-8fe5-935932b69972
  28th January 2026 - Awarded contract 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-b5fd17-26c85b8a-7069-4f6c-bcd3-e120fa12d051. The underlying structured data is available as OCDS JSON at https://d3tenders.com/contract/ocds-b5fd17-26c85b8a-7069-4f6c-bcd3-e120fa12d051.json.