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UK Altnets: Sky (officially) launches on CityFibre

9 July 2025
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Sky has officially launched on CityFibre’s network, offering up to 5Gbps speeds, which may have more of a halo effect for Sky than driving direct adoption of these very high end packages.

Sky is critical to CityFibre’s wholesale model given its size, and it is a good sign that Sky is proving an enthusiastic wholesale customer, while it is likely to be wary of others.

CityFibre still needs to complete its planned financing round to kick off a wholesale-focused consolidation wave, which would ultimately be beneficial to all incumbents in ending irrational price competition from retail altnets.

Related reports

CityFibre wins Sky deal: Altnets shift to wholesale

20 August 2024

CityFibre has announced a deal to supply the second largest UK ISP Sky with wholesale broadband services, doubling its addressable target market at a stroke, in a blow to Openreach.

This may be just a foot in the door for CityFibre, but it is a critical one, and puts it firmly in the driving seat for altnet consolidation. There are also positives for VMO2 and other altnets hopeful of an eventual wholesale deal with Sky, and for retail ISPs now that the altnet sector is pitching towards wholesale away from retail.

While this is obviously bad news for Openreach, we see it more as an absence of a potential positive than something that might actually worsen current trends, and there are mitigating positives for the wider BT Group.

Access report

Altnets in the UK: Consolidation endgame

26 June 2025

The largest UK altnets are now all at or close to EBITDA positive, but still heavily cashflow negative even pre-interest costs and with paused builds, due to various below-the-line cash costs requiring continuous funding. EBITDA margins of as much as 35%+ are required to actually be cashflow breakeven.

Altnet economics are still challenging even if debts are fully written off, with a payback of more than 5 years on customer acquisition and connection costs alone.

The consolidation endgame is increasingly imminent, with the outcome likely to be a mix of CityFibre/VMO2 acquisitions, stand-alone niche players continuing, and abandoned assets, with the outcome for the rest of the sector more benign under any scenario than current trends.
 

Access report

  • CityFibre wins Sky deal: Altnets shift to wholesale

    20 August 2024

    CityFibre has announced a deal to supply the second largest UK ISP Sky with wholesale broadband services, doubling its addressable target market at a stroke, in a blow to Openreach.

    This may be just a foot in the door for CityFibre, but it is a critical one, and puts it firmly in the driving seat for altnet consolidation. There are also positives for VMO2 and other altnets hopeful of an eventual wholesale deal with Sky, and for retail ISPs now that the altnet sector is pitching towards wholesale away from retail.

    While this is obviously bad news for Openreach, we see it more as an absence of a potential positive than something that might actually worsen current trends, and there are mitigating positives for the wider BT Group.

    Access report

  • Altnets in the UK: Consolidation endgame

    26 June 2025

    The largest UK altnets are now all at or close to EBITDA positive, but still heavily cashflow negative even pre-interest costs and with paused builds, due to various below-the-line cash costs requiring continuous funding. EBITDA margins of as much as 35%+ are required to actually be cashflow breakeven.

    Altnet economics are still challenging even if debts are fully written off, with a payback of more than 5 years on customer acquisition and connection costs alone.

    The consolidation endgame is increasingly imminent, with the outcome likely to be a mix of CityFibre/VMO2 acquisitions, stand-alone niche players continuing, and abandoned assets, with the outcome for the rest of the sector more benign under any scenario than current trends.
     

    Access report