investigation into three following voice service outage on 25 june 2025
UK — Ofcom · 2025-12-15 · UK · verified record
Themes: Cybersecurity · Telecoms & connectivity
Ecosystems: UK Telecoms Security Act
https://www.ofcom.org.uk/phones-and-broadband/telecoms-infrastructure/investigation-into-three-following-voice-service-outage-on-25-june-2025
Open Hutchinson 3G UK Limited (trading as Three UK) 15 December 2025 We are investigating Three in relation to a voice service outage on 25 June 2025. Sections 105A and 105C of the Communications Act 2003 and the Electronic Communications (Security Measures) Regulations 2022. Ofcom has today opened an own-initiative investigation into Three’s compliance with sections 105A and 105C of the Communications Act 2003 and the Electronic Communications (Security Measures) Regulations 2022 (the Regulations). The investigation follows Three’s notification of an incident which resulted in UK-wide disrupt…
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