Openreach, created in 2006, is BT Group's wholesale fixed network, independently governed. Providers such as BT, Sky and TalkTalk rent its lines. Full fibre reached over 23.5M premises in October 2026, and the analogue phone network closes on 31 January 2027.

Fixed network
- Network used
- Openreach
- Technologies
- Full Fibre (FTTP)Fibre to the cabinet (FTTC)Copper broadband
- Subscribers
- 9.4M· full fibre premises connected, June 2026
- Coverage
- United Kingdom
25M premises targeted with full fibre by December 2026. Around 1.2M lines were still on the analogue phone network in September 2026.