Broadcast Live Management Update

FOR IMMEDIATE RELEASE21 August 2025

London, UK

Defence Holdings PLC

("Defence" or "the Company")

Defence Holdings PLC to Broadcast Live Management Update on Strategic Partnership with Whitespace Defence Holdings PLC (ALRT), the UK's first listed software-led defence company, announces that members of its Board of Directors will host a live Management Update via X (formerly Twitter) on Monday, 25 August 2025 at 10:00 BST.

The session will focus on the recently announced Strategic Partnership with Whitespace and provide an update on the Company's broader roadmap for sovereign AI infrastructure, as set out in its five-year plan and the UK's Strategic Defence Review 2025.

Key Highlights

● Management Update to provide further insight into Defence Holdings' Strategic Partnership with White.space

● Discussion to cover the operational role of sovereign AI infrastructure and delivery of the Company's strategic roadmap

● Investors, analysts, and defence stakeholders invited to watch live or access the post-event recording

● Recording will be made available post-event via the Company's investor relations portal

Discussion Themes

The Management Update will include:

● Intro & Context. Opening remarks outlining recent strategic milestones including the partnership with White.space and the appointment of Andy McCartney as Chief Technology Officer.

● Leadership Transition. Andy McCartney will discuss his move from Non-Executive Director to CTO, including the timing, motivation, and alignment with the Company's five-year plan.

● Strategic Partnership with Whitespace. Panel discussion on the scope and execution of the partnership, its role in unlocking new capabilities, and why Whitespace was selected as a long-term collaborator.

● Investor & Stakeholder Priorities. Key takeaways for investors, insights into Defence Holdings' positioning within evolving UK and allied defence strategies, and messages for government and industry stakeholders.

Event Details

Date: Monday, 25 August 2025

Time: 10:00 BST

Location: Live broadcast via X (formerly Twitter)

Broadcast from: https://x.com/wearedefence

Participants

● Brian Stockbridge - Executive Director, Defence Holdings PLC

● Andy McCartney - Chief Technology Officer, Defence Holdings PLC

● James Norwood - Non-Executive Director, Defence Holdings PLC

● Ian Yarwood Lovett - Non-Executive Director, Defence Holdings PLC

● Anthony Stazicker - Non-Executive Director, Defence Holdings PLC

About Defence Holdings PLC (ALRT)

Defence Holdings PLC (LSE: ALRT) is the UK's first listed software-led defence company. Its five-year strategic plan focuses on delivering sovereign digital capabilities across national security, resilience, and defence readiness.

Media EnquiriesBrian Stockbridge, DirectorDefence Holdings PLCTel: +44 (0)20 3855 5551 · Email: [email protected]