Citadel Red
Collaborate Securely Across SECRET Programmes and Supply Chains
A UK Sovereign Collaboration Platform for High-Assurance Environments
Citadel Red enables organisations that require a SECRET collaboration environment to work securely with customers, partners and supply chains through a UK sovereign collaboration platform. It protects Protectively Marked information, intellectual property and sensitive programme data under UK jurisdiction while giving authorised users a trusted place to share information, manage documents and coordinate activity.
Designed for high-assurance collaboration, Citadel Red supports trusted services such as secure document management and sharing. It helps teams reduce fragmented tools, improve visibility and collaborate confidently across Defence, Government, Academia, Industry and Critical National Infrastructure.
Remove Collaboration Barriers Without Increasing Risk
Successful programmes depend on trusted collaboration from the initial bid and proposal creation through to delivery and beyond securing the entire lifecycle of the programme. Customers, partners, suppliers and delivery teams need to share information, coordinate decisions and maintain momentum without compromising security, governance or operational control.
When collaboration is fragmented across disconnected tools and organisations, teams lose visibility, documents become harder to manage and decision making slows. Citadel Red reduces that complexity by providing an established UK sovereign collaboration environment where authorised users can work together with confidence.
What Citadel Red Enables
Build Trusted Relationships
Create a trusted environment where customers, partners and supply chain organisations can work together confidently, strengthening relationships and supporting successful bids, programmes and long-term partnerships.
Collaborate with Confidence
Share sensitive information securely across organisational boundaries without compromising governance, intellectual property or operational control.
Make Better Decisions, Faster
Provide authorised users with timely access to trusted information, improving visibility, accelerating decision making and reducing delays across complex programmes.
Simplify Secure Collaboration
Reduce the complexity of managing multiple collaboration tools through a single trusted platform.
Protect What Matters Most
Safeguard Protectively Marked information, intellectual property and programme data through UK sovereign infrastructure that keeps collaboration services and information under UK jurisdiction.
What Customers Achieve from Citadel Red
Trusted collaboration
Enable customers, partners and supply chains to work together confidently in a secure collaboration environment.
Better programme visibility
Provide authorised users with access to trusted documents, communications and project information across complex programmes.
Faster decision making
Reduce delays caused by fragmented tools, duplicated documents and inconsistent information sharing.
Stronger supply chain relationships
Build confidence through secure document sharing, project communication, governance workflows and transparent collaboration.
Sovereign assurance
Keep collaboration services, programme information, intellectual property and communications under UK jurisdiction.
Why Prolinx
Trusted Collaboration by Design
Citadel Red has been designed to enable organisations to collaborate securely while maintaining governance, assurance and operational control across complex programmes.
Built Around Operational Reality
Designed by people who understand the realities of working across defence, government and complex supply chains, Citadel Red enables organisations to collaborate confidently without introducing unnecessary risk.
Productised for Rapid Deployment
Repeatable deployment models, fully managed services and integrated collaboration capabilities simplify implementation and enable organisations to establish trusted collaboration environments quickly.
UK Sovereign by Design
As a UK-owned and UK-operated provider, Prolinx protects collaboration services, document sharing, communications, programme information and intellectual property under UK jurisdiction while providing the assurance required for secure, trusted collaboration across complex supply chains.
Engineering Excellence
Supported by a highly skilled, security-cleared workforce, Prolinx combines engineering excellence with operational understanding to help organisations strengthen collaboration, improve governance and protect critical information.
Ready to Establish a Trusted SECRET Collaboration Environment?
Whether you are developing bids, managing complex programmes or enabling secure collaboration across customers, partners and supply chains, Citadel Red provides the trusted UK sovereign collaboration platform needed to work together securely and confidently.