4 December 2025

Shearwater Group PLC

("Shearwater", or the "Group")

£7.3m Contract Extension with Leading Mobile Network Operator

Strengthening data protection capabilities at a critical time

Shearwater Group plc, the cybersecurity, advisory and managed security services group, is pleased to announce that its Group company, Brookcourt Solutions, has secured a significant £7.3m contract extension and expansion, over three years, with a leading British mobile network operator.

The total contract value is approximately, £7.3m, of which £3.5m will be recognised in FY26, supporting the delivery of market expectations for the period. The contract comprises of approximately £6.1m for the provision of Thales Imperva Data Security Fabric ("DSF") licences, and approximately £1.2m for Brookcourt's Managed Services provision.

The Thales Imperva DSF will provide unified visibility, control and automation to protect sensitive data, prevent breaches and simplify compliance. Under the agreement, Brookcourt's Managed Service will provide dedicated engineering expertise to strengthen the customer's operational teams, focusing on advanced management of their data security platform. This enhanced solution ensures the customer continues to secure data across its extensive and complex infrastructure, improving its overall security posture and helping mitigate data security risks and compliance policy violations.

This contract award reflects Brookcourt's long-standing relationship with the customer and demonstrates continued confidence in Shearwater's capability to deliver critical data security, monitoring and protection services. More broadly, the increasing frequency, complexity and scale of cyber-security threats continue to fuel growth in the sector, with cybersecurity now a central priority in customer procurement decisions. The Group remains focused and committed to converting its strong and expanding pipeline of opportunities.

Phil Higgins, Chief Executive Officer of Shearwater Group plc, said: "This contract extension represents a strong validation of the value we deliver to major critical infrastructure organisations. Our continued partnership with this leading UK telecommunications provider underlines both the quality of our technology partners and the deep expertise within Brookcourt's managed services team. We are delighted to support the customer in strengthening their data protection capabilities over the next three years and view this contract as an important contributor to our long-term growth strategy."

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About Shearwater Group plc

Shearwater Group plc is an award-winning group providing cyber security, managed security and professional advisory solutions to create a safer online environment for organisations and their end users.

The Group's differentiated full service offering spans identity and access management and data security, cybersecurity solutions and managed security services, and security governance, risk and compliance. Its growth strategy is focused on building a scalable group that caters to the entire spectrum of cyber security and managed security needs, through a focused buy and build approach.

The Group is headquartered in the UK, serving customers globally across a broad spectrum of industries.

Shearwater shares are listed on the London Stock Exchange's AIM under the ticker "SWG".  For more information, please visit www.shearwatergroup.com.