This in-service support is currently achieved via a sole source contract with the Original Equipment Manufacturer (OEM) including a contractual arrangement for the management of the Shore Reference Sets (SRS) associated with the ICS.
ICS provides a digital and analogue voice message exchange architecture that supports voice communications over digital and wireless networks and analogue circuits. The system also includes a telephone exchange, secondary, emergency damage control (DC) communication systems, submarine broadcast and general alarm functions. A-Class ICS employs a wholly, complex, 3-node communication architecture that employs digital switch and network technologies within a multi-layer software model. It supports essential communications between the submarine crew for operational and safety critical functions on-board. The existing system in place is based on Integrated Services Digital Network (ISDN) and will need to move to the modern Voice Over Internet Protocol (VOIP) technology to allow long term support.
ICS is a complex system with many interfaces and nodes to allow personnel the opportunity to communicate throughout the platform. This complexity is not always understood by Ship Staff so it is essential to have engineering backup available via Suitably Qualified and Experienced Personnel (SQEP) ICS engineers provisioned for via a support contract. Astute ICS is a Priority 1 Master Equipment (ME) and is vital to delivering platform capability. The software will need to be a SIL2 (Safety Integrity Level) system and integral to the whole boat safety case.
View 2-notice timelineLatest notice released 12 Jun 2026
Public SectorTender 2 notices
UK3 - Planned Procurement Notice
UNIFORM / SPECIALIST CLOTHING SEAMSTER CONTRACT
Royal Navy and Royal Marine (RN/RM) Service Personnel are required to meet the standards of dress detailed in Naval Personnel Management Regulations. Service personnel require a seamster service to ensure that standards are maintained in accordance with BRd3(1) para 3702.
These services include the necessary alterations to Uniform Clothing together with the sewing on of required insignia and decorations.
713431451-Supply and Support for General Valves and Actuators-UK4
This contract is looking for a prime contractor for the provision of spares, repairs, technical support and Obsolescence for the following types of Submarine Valves, Actuators and their components for all In-service Submarines, circa 4,000 NSNs:
First Level Valves
Non-First Level Valves
First Level Actuators
Non-First Level Actuators.
There will also be a small requirement for valves and actuators for RN surface fleet.
This project was previously known as 713431451-Supply and Support for Valves and their Actuators
View 5-notice timelineLatest notice released 26 Jun 2026
Public SectorUpdate 3 notices
715724483_V2 The Provision of Nuclear Site Safety Justification (NSSJ) Services at HMNB Devonport
Description of the Procurement
The fundamental aim of the Naval Site Safety Justification (NSSJ) contract is to procure the provision of an integrated Project Management Service (PMS) to support the continued authorisation and safe operation of HM Naval Base (HMNB) Devonport.
The contract provides specialist capability to deliver project management, nuclear safety advice, safety case production and maintenance, and Periodic Review of Safety (PRS) activities, under a pro rata model. These services ensure that the Naval Base Commander’s Site Safety Justification documentation remains current, robust, and fully compliant with:
• MoD Authorisation Conditions
• MoD Naval Nuclear Safety Principles (NNSP)
• Applicable Defence Nuclear Safety Regulator (DNSR) standards
In addition to technical delivery, the contract supports knowledge transfer and information sharing to strengthen the Authority’s Intelligent Customer (IC) capability.
Scope of Services
The services to be provided under this contract include, but are not limited to:
1. Nuclear Safety Case Management and Support
• Provision of specialist nuclear safety advice reflecting modern civil nuclear practice.
• Management, review, and maintenance of the full suite of HMNB Devonport nuclear safety cases and supporting documentation.
• Support to the Naval Base Design Authority in ensuring safety justification documentation remains authorised and compliant throughout its lifecycle.
2. Nuclear Authorised Documentation Review Programme (NADRP) Support
• Support for documentation production, review, update, and tracking activities using the Nuclear Authorised Documentation Review Programme (NADRP).
• Delivery of tasks assigned via NADRP in accordance with programme priorities and Design Authority requirements.
• Flexible and reactive support for new documentation tasks driven by the submarine operational programme, including delivery to demanding timelines.
3. Periodic Review of Safety (PRS) Support
• Full-time technical support to the PRS Lead, managed through the Design Authority PRS Assistant Head role.
• Subject matter review and assessment activity contributing to the successful delivery of the Naval Base PRS programme.
4. Intelligent Customer (IC) Support
• Independent IC support to the Design Authority Safety Justification Delivery Manager (SJDM).
• Provision of an experienced safety engineer to assess NSSJ documentation during production, review, and approval stages.
• Assurance that IC activities remain independent from document authorship and production.
5. Continuous Improvement and Knowledge Transfer
• Support to the Naval Base in fostering a culture of continuous improvement in nuclear safety management.
• Knowledge sharing and mentoring to enhance internal capability and resilience within the Authority.
Delivery Context and Experience Requirements
The service provider is required to bring a high level of knowledge and experience in nuclear safety case management, with a strong understanding of the MOD environment. This includes experience of operating within the challenges of balancing a demanding military operational programme with the stringent requirements of nuclear safety regulation.
The provider is expected to work within established HMNB Devonport nuclear safety management arrangements while applying relevant external experience and best practice to enhance safety performance.
View 3-notice timelineLatest notice released 16 Jul 2026
Public SectorPlanning
715862519 - Atmosphere Monitoring System (AMS)
This Pipeline Notice relates to a potential future requirement by the Submarine Delivery Agency (SDA) for Atmosphere Monitoring Systems (AMS).
This Pipeline Notice is published in accordance with the requirements of the Procurement Act 2023, to provide advance visibility of the Authority’s planned procurements over the forthcoming financial year.
The requirement may include, but is not limited to:
• the provision of goods, services, or works in support of the Authority’s operational requirements;
• maintenance, repair, and support services;
• the supply of associated equipment, components, or technical services; and/or
• professional, advisory, or enabling services.
Further details will be provided within individual tender notices as and when any procurement is formally initiated.
The information contained within this notice is indicative only and is published for transparency and market awareness purposes. It does not constitute a call for competition, a request for expressions of interest (EOI), or a commitment by the Authority to undertake any procurement.
Interested parties should note:
• This Pipeline Notice is intended solely to alert the market to a potential future requirement;
• No further information is available at this stage;
• The anticipated timing of any future notices, as well as estimated contract value, start date, and duration, are subject to change.
This Pipeline Notice relates to a potential future requirement by the Submarine Delivery Agency (SDA) for Hydraulics.
This Pipeline Notice is published in accordance with the requirements of the Procurement Act 2023, to provide advance visibility of the Authority’s planned procurements over the forthcoming financial year.
The requirement may include, but is not limited to:
• the provision of goods, services, or works in support of the Authority’s operational requirements;
• maintenance, repair, and support services;
• the supply of associated equipment, components, or technical services; and/or
• professional, advisory, or enabling services.
Further details will be provided within individual tender notices as and when any procurement is formally initiated.
The information contained within this notice is indicative only and is published for transparency and market awareness purposes. It does not constitute a call for competition, a request for expressions of interest (EOI), or a commitment by the Authority to undertake any procurement.
Interested parties should note:
• This Pipeline Notice is intended solely to alert the market to a potential future requirement;
• No further information is available at this stage;
• The anticipated timing of any future notices, as well as estimated contract value, start date, and duration, are subject to change.
The primary aim of this procurement is to establish a contract that ensures the continued supply, technical support and post‑design services for Pressure Hull Glands (PHG), Cable Harnesses, Cryocon Rings, Sintered Glass Penetrators (SGP) and associated equipment fitted to the Royal Navy’s submarine fleet, in order to maintain safety, availability and Continuous At Sea Deterrence (CASD).
The contract term is anticipated to be a minimum of 4 years in length. Previous attempts to compete this requirement and continued market engagement indicate that the most appropriate route to market is via the Direct Award procedure, under the Procurement Act 2023. This is subject to confirmation following internal testing of this assumption against the legal parameters outlined within Schedule 5 of the Procurement Act.
In-Service Support for Main Circulating Water Pumps (MCWP)
The planned procurement shall provide in-service support for Main Circulating Water Pumps (MCWPs) on board naval submarines. The primary body of work required will be the repair and refurbishment of existing pumps, for which it is essential that bidders either own or have unlimited access to a pump testing facility.
Additionally, suppliers must have the storage capabilities to potentially accommodate several MCWPs at one time, as well as the supply-chain network to source its own parts and materials. This procurement is not anticipated to include within its scope the manufacture and purchase of new pumps.
Potential suppliers must have the suitably qualified and experienced personnel to produce technical reports associated with health checks and strip and surveys, and the surveying capabilities to accurately estimate the cost and lead time of repairing pumps to an A1 standard.
This procurement will be for a minimum 5-year contract term. The contract shall be competed under Procurement Act 2023 regulations and will be subject to the competitive flexible procedure.
The Submarine Delivery Agency (SDA) has a requirement for the Supply and Support of Control and Indication Equipment for UK Submarines and Surface Ships.
The information in this UK1 Pipeline Notice is purely for information, and no further details are available at this stage. Further details will be provided in future notices.
Interested parties are to note:
• Suppliers are requested not to contact any representatives of the Authority regarding this potential requirement until further formal communication is issued via official notices.
• This Pipeline Notice is intended solely to alert the market to a potential future requirement. It does not constitute a formal request for Expressions of Interest (EOI) nor a commitment to undertake a procurement exercise.
• The publication date of the UK 4 Tender Notice, Contract Value, Contract start date and Contract end date are provisional and still subject to change.
The Submarine Delivery Agency (SDA) has a requirement for the Supply and Support of Electrical Conversion & Support (ECS) Equipment for UK Submarines and Surface Ships.
The information in this UK1 Pipeline Notice is purely for information, and no further details are available at this stage. Further details will be provided in future notices.
Interested parties are to note:
• Suppliers are requested not to contact any representatives of the Authority regarding this potential requirement until further formal communication is issued via official notices.
• This Pipeline Notice is intended solely to alert the market to a potential future requirement. It does not constitute a formal request for Expressions of Interest (EOI) nor a commitment to undertake a procurement exercise.
• The publication date of the UK 4 Tender Notice, Contract Value, Contract start date and Contract end date are provisional and still subject to change.
The Submarine Delivery Agency (SDA) has a requirement for the Supply and Support of Specialist Valves for UK Submarines and Surface Ships.
The information in this UK1 Pipeline Notice is purely for information, and no further details are available at this stage. Further details will be provided in future notices.
Interested parties are to note:
• Suppliers are requested not to contact any representatives of the Authority regarding this potential requirement until further formal communication is issued via official notices.
• This Pipeline Notice is intended solely to alert the market to a potential future requirement. It does not constitute a formal request for Expressions of Interest (EOI) nor a commitment to undertake a procurement exercise.
• The publication date of the UK 4 Tender Notice, Contract Value, Contract start date and Contract end date are provisional and still subject to change.
715860474 - Submarine Switchgear and Distribution - UK1
The Submarine Delivery Agency (SDA) has a requirement for the Supply and Support of Submarine Switchgear and Distribution Equipment for UK Submarines and Surface Ships.
This UK1 Pipeline Notice is issued for information purposes only. Detailed information is not available at this stage and will be provided through future notices as the requirement develops.
Interested parties should note the following:
• Suppliers are requested not to contact any representatives of the Authority regarding this potential requirement until further formal communication is issued via official notices.
• This Pipeline Notice is intended solely to alert the market to a potential future requirement. It does not constitute a formal request for Expressions of Interest (EOI) nor a commitment to undertake a procurement exercise.
• The anticipated publication date of the UK4 Tender Notice, along with indicative contract value, start date, and end date, remain provisional and are subject to change.
715820471 - Pressure Hull Penetrators and Associated Cables and Connectors (PCC) - UK1
The Authority has a requirement for a new contract to support Pressure Hull Penetrators and any associated cables & connectors.
There is an enduring requirement for the continued procurement, repair, overhaul, and Post Design Services for equipment and stores associated with AMETEK equipment and their components fitted to Submarines, as well as the provision of technical support, including updates to technical manuals, maintenance manuals, books of reference and safety documentation.