Why South Tyneside leapt 44.5pp on Full Fibre
Between July 2024 and May 2026, South Tyneside's Full Fibre Density Index rose from 22.6% to 67.1% — the steepest two-year climb in the North East. Here's what the data shows, and what councils elsewhere can take from it.
South Tyneside is now the biggest two-year Full Fibre mover in the North East. Between Ofcom's July 2024 and May 2026 Connected Nations releases, its Full Fibre Density Index (FDDI) climbed from 0.226 → 0.671 — a +44.5 percentage-point shift that pushed the authority out of the Critical Gap band and into Developing territory.
To put that in human terms: roughly 32,500 additional premises crossed the FTTP availability threshold inside 24 months.
The numbers
| Metric (Ofcom) | July 2024 | May 2026 | Δ |
|---|---|---|---|
| Full Fibre availability | 22.6% | 67.1% | +44.5pp |
| ≥300 Mbps availability | 51.4% | 94.7% | +43.3pp |
| 4G outdoor (all 4 ops) | 98.4% | 99.9% | +1.5pp |
| FDDI tier | Critical Gap | Developing | ↑ 1 band |
Three of the region's four operators expanded simultaneously inside South Tyneside's footprint. The result: the authority's rank on Premises ≥300 Mbps improved from #11 to #7 of 12.
What the data shows
- Density beats coverage. South Tyneside's premises base is comparatively dense (73k premises across a small footprint). Civils per premises drop sharply, and that's where altnet build economics work.
- Critical Gap is a leading indicator, not a destination. Authorities below 0.40 FDDI in 2024 had 2.3× the upside of those above 0.70 over the same window. The opportunity cost of treating CEI=High as a stable state was meaningful.
- Mobile didn't move. MSQI ticked up by less than 2 points. Fixed and mobile rollout cadence are operating on entirely different clocks in this region.
What other councils can take from it
If your authority is sitting under FDDI 0.40 today, the South Tyneside trajectory says it's reachable inside 24 months under the right operator-permit-civils alignment. Two questions worth answering this quarter:
- Where are your build-ready clusters? Run the postcode checker against your top deprivation deciles — that's where the deficit usually lives.
- What's your CEI exposure? CEI v2.0 still flags High-or-Critical for several LAs in the region. Each 0.10 point shaved off CEI typically corresponds to ~6,000 newly fibre-ready premises at South Tyneside's premises density.
Run South Tyneside's identity page →
/la/south-tyneside
We'll be tracking the November 2026 vintage when it lands. The expectation: the gap narrows further, and at least two more authorities cross the Developing threshold.