Planning

PDM4 Obsolescence Recovery

DEFENCE EQUIPMENT AND SUPPORT

This public procurement record has 2 releases in its history.

PlanningUpdate

24 Jun 2025 at 11:33

UK1 - Pipeline Notice
Planning

13 Jun 2025 at 09:39

UK1 - Pipeline Notice
Summary of the contracting process

The Defence Equipment and Support organisation, a public authority under central government, is planning a procurement process titled "PDM4 Obsolescence Recovery." This tender addresses high-risk obsolescence issues for the Platform Data Management System 4 (PDM4) used in Vanguard Class Submarines. It falls under the industry category of navigation equipment and is located in the United Kingdom. The process is currently in the planning stage, with a scheduled contract period from 30th November 2025 to 30th November 2027. A future notice date is set for 31st July 2025. Organisations interested in supplying goods above the threshold value of GBP 2,634,000 may consider this opportunity.

This procurement offers significant business growth opportunities, especially for small and medium-sized enterprises (SMEs) equipped to address critical obsolescence issues like Power Supply Units and PEC SIOs. Companies specialising in maritime navigation equipment and obsolescence recovery services may find this tender well-suited to their capabilities. Engaging in this tender could provide substantial revenue potential and the opportunity to establish long-term relationships with Defence Equipment and Support, enhancing one's reputation in the industry.

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Notice Information

Notice Title

PDM4 Obsolescence Recovery

Notice Description

There is a requirement for the Maritime Command & Control, Targeting, Navigation, and Communications Team (C2TNC) within Sense, Decide and Communicate (SDC) to provide obsolescence recovery for the Platform Data Management System 4 (PDM 4) fitted to Vanguard Class Submarines. PDM In-Service Support is currently provided through contract CSA/3049. PDM4 has been in operation since the early 1990s with an expected in-service period until 2015. The original Out of Service Dates (OSD) has been extended by up to 100%, and no provision of additional stores was made when the OSDs were extended. As a result, work is now required to address the high-risk obsolescence issues, where there are low stores and items which require regular Survey and Repair. Failure to do this will adversely impact the operational capability of the CASD Vanguard Class Submarines. Currently the two main areas of concern are (1) Power Supply Units (PSUs) of which there are three variants and (2) PEC SIOs. Both items are critical to the safe operation of PDM4.

Notice Details

Publication & Lifecycle

Open Contracting ID
ocds-h6vhtk-054840
Publication Source
Find A Tender Service
Latest Notice
https://www.find-tender.service.gov.uk/Notice/034705-2025
Current Stage
Planning
All Stages
Planning

Procurement Classification

Notice Type
UK1 - Pipeline Notice
Procurement Type
Standard
Procurement Category
Goods
Procurement Method
Not Specified
Procurement Method Details
Not specified
Tender Suitability
SME
Awardee Scale
Not specified

Common Procurement Vocabulary (CPV)

CPV Divisions

34 - Transport equipment and auxiliary products to transportation

CPV Codes

34933000 - Navigation equipment

Notice Value(s)

Tender Value
£2,634,000 £1M-£10M
Lots Value
Not specified
Awards Value
Not specified
Contracts Value
Not specified

Notice Dates

Publication Date
24 Jun 20258 months ago
Submission Deadline
Not specified
Future Notice Date
31 Jul 2025Expired
Award Date
Not specified
Contract Period
30 Nov 2025 - 30 Nov 2027 2-3 years
Recurrence
Not specified

Notice Status

Tender Status
Planned
Lots Status
Planned
Awards Status
Not Specified
Contracts Status
Not Specified

Buyer & Supplier

Contracting Authority (Buyer)

Main Buyer
DEFENCE EQUIPMENT AND SUPPORT
Contact Name
Not specified
Contact Email
example.example@mod.gov.uk
Contact Phone
Not specified

Buyer Location

Locality
BRISTOL
Postcode
BS34 8JH
Post Town
Bristol
Country
England
Major Region (ITL 1)
TLK South West (England)
Basic Region (ITL 2)
TLK5 West of England
Small Region (ITL 3)
TLK52 Bath & North East Somerset and South Gloucestershire
Delivery Location
Not specified
Local Authority
South Gloucestershire
Electoral Ward
Stoke Park & Cheswick
Westminster Constituency
Filton and Bradley Stoke

Further Information

Notice Documents

Open Contracting Data Standard (OCDS)

View full OCDS Record for this contracting process

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The Open Contracting Data Standard (OCDS) is a framework designed to increase transparency and access to public procurement data in the public sector. It is widely used by governments and organisations worldwide to report on procurement processes and contracts. 

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