Overview
BT Group sells managed security through its business division, combining network-based protection with managed detection, consulting and incident response. Its cybersecurity page states that BT has 3,000 security professionals and describes the company as one of the largest security and network providers[22]. The headcount includes staff who protect BT’s own networks, which differ from client-facing service teams. BT does not report security revenue separately. BT’s position in this list rests on that single figure; it does not publish a SOC count or a customer number for its security business. Its services are aimed mainly at organisations that already buy network connectivity from BT, in the UK and internationally.
Appears in
- Largest UK Companies by Revenue (2026) #24
- Largest Telecom Companies (2026) #14
- Top 50 Cybersecurity Service Providers: 2026 Edition #18
BT Group plc alternatives and competitors
Alternatives to BT Group plc: companies ranked in the same lists.
Swisscom- Vodafone Group Plc
Shell plc- Thales SafeNet Trusted Access
- Ensign InfoSecurity
LevelBlue
I-TRACING
Coalfire
Inspira Enterprise
CGI
DXC Technology
LTM (formerly LTIMindtree)
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