EXCLUSIVE March 2026 Update on Openreach Full-Fibre Roll-Out

Key Takeaways

• Added 363,513 premises in four weeks.
• Total FTTP coverage reaches 65.1% of UK premises.
• Projected 25 million premises by December 2026.
• Alt‑net providers now serve growing share of new builds.
• Build rate may slow sharply after 2026.

Pulse Analysis

Openreach’s recent surge in full‑fibre deployments underscores a decisive push toward nationwide ultra‑fast broadband. By adding over 360,000 premises in just a month, the carrier lifted its FTTP footprint to 21.75 million locations, covering roughly two‑thirds of UK households. This acceleration, combined with a 1.06 million‑premise increase in the last quarter, puts the long‑sought 25‑million‑premise target within reach before year‑end, a benchmark that could trigger regulatory incentives and bolster investor confidence in the UK’s digital infrastructure.

The expanding role of alternative‑net operators is another critical dynamic. While Openreach still dominates the legacy market, alt‑net providers such as Hyperoptic, OFNL and Grain Connect are increasingly delivering fibre to new‑build homes, especially in the 2020‑2025 property cohort. This diversification helps mitigate the slight negative growth observed in newer postcodes and intensifies competition on price, service quality, and coverage speed. The data also reveal higher penetration rates in older housing stock, suggesting that legacy upgrades remain a fertile ground for further expansion.

Looking ahead, analysts anticipate a deceleration in build rates once the 25‑million‑premise milestone is achieved. Openreach’s forthcoming guidance for the 2027‑2030 period will be pivotal; a steep cliff‑edge slowdown could strain broadband adoption goals, whereas a gradual taper would allow the firm to address lingering gaps—such as cost‑blocked or address‑issue‑laden sites. Stakeholders will watch closely for strategic signals, including potential collaborations with alt‑nets and revised investment models, that could shape the next phase of the UK’s fibre rollout.