Community Fibre Is Flying High in the UK's Crowded Altnet Sector

Why It Matters

Community Fibre’s high margins and rapid customer growth prove a lean altnet can compete with incumbents, reshaping the UK broadband and mobile landscape.

Key Takeaways

• 450,000 customers, 33% take‑up rate, leading UK altnet
• 2025 revenue $152M, adjusted EBITDA $67M, 90% gross margin
• Plans £180M ($242M) investment to add 600k premises
• Launching unlimited 5G at £15/$17, MVNO via Vodafone Three
• B2B install time 30 days, half Openreach’s 60‑90 days

Pulse Analysis

The UK’s alternative‑network (altnet) sector has long struggled with low take‑up rates and heavy debt, but Community Fibre is rewriting that narrative. Backed by deep‑pocket investors, the company has focused on dense urban districts in London, achieving a 33% subscription rate on premises passed—well above the 18% industry average and close to Openreach’s 38% benchmark. By limiting expansion to high‑density multi‑dwelling units and leveraging existing Openreach ducts, it has kept capital expenditures modest while delivering a premium service that resonates with both residential and business customers.

Financially, Community Fibre’s performance is striking. Revenue climbed to £113 million ($152 million) in 2025, a 48% increase, while adjusted EBITDA surged 530% to £50 million ($67 million). The company now boasts a 90% gross margin, giving it ample cash flow to fund its next phase: a £180 million ($242 million) rollout to an additional 600,000 premises. This investment aims to push its footprint toward 2 million homes and businesses, a scale that could rival BT Openreach’s cost per home passed and force incumbents to re‑evaluate pricing and deployment strategies.

The move into mobile further amplifies its disruptive potential. By partnering with Vodafone Three as a wholesale provider, Community Fibre can offer an unlimited 5G plan at £15 ($17) for existing broadband users, sidestepping the massive capex of building its own radio network. The eSIM‑enabled sign‑up process lowers friction, targeting a market where 60‑75% of smartphones support eSIM. This aggressive pricing, combined with faster B2B installation times, puts pressure on legacy operators and signals a broader shift toward integrated, cost‑effective connectivity solutions in the UK telecom sector.