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The latest annual ORESA Growth Index 2026 has just been published and this year’s edition includes five alternative full fibre broadband networks – Toob, Netomnia, Grain Connect, CommunityFibre and Fibrus. The full list ranks the UK’s 100 fastest-growing private companies by compound annual growth rate (CAGR) – those with at least £5m in recent sales.
One caveat to consider here is that being one of Britain’s fastest-growing private technology companies doesn’t always equate to overall success, particularly when some of those operators are still in the rapid build phase and so may be racking up debts faster than they can grow customers. Nevertheless, it’s still good to be placed in lists like this, even if it doesn’t always reflect the full picture.
Orlando Martins, CEO at ORESA, said: “What’s striking is that many of these companies are succeeding despite significant obstacles. We’re seeing founders embrace new technologies, women build high-growth businesses against the odds, and ambitious firms scale internationally. The results suggest Britain is still leaving a great deal of economic potential untapped.”
Overall, the highest ranked alternative broadband network was Southampton based toob (11th) with a CAGR of 154.86% and sales of £14m (Dec 2024), but they have fallen by 11 places since last year’s report.
Top Ranked Altnets in the ORESA Growth Index 2026
1. Toob (11th) with a CAGR of 154.86% and sales of £14m (Dec 2024)
2. Netomnia (20th) with a CAGR of 147.91% and sales of £24m
3. Grain Connect (25th) with a CAGR of 141% and sales of £9m
4. CommunityFibre (55th) with a CAGR of 94.94% and sales of £76m
5. Fibrus (100th) with a CAGR of 63% and sales of £29.5m