UK Altnets: Something's got to give


24 November 2025

Altnet losses expanded to £1.5bn in 2024, as EBITDA losses persisted and interest costs rose sharply, with ARPUs weakening and operating costs stubbornly high, and the increasing interest burden looking unpayable under any reasonable scenario.

Even the best performing altnets can barely make EBITDA breakeven, and not make sufficient margins to cover ongoing customer acquisition investment, resulting in a perpetual cash drain for their investors.

The impact on the rest of the sector is worsening in the short term as pricing falls, but this should accelerate the inevitable consolidation into a sustainable wholesale model under CityFibre and/or VMO2/nexfibre.

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