UK AltNet profile
Netomnia (Substantial Group)
Netomnia (Substantial Group) is a UK altnet focused on Nationwide UK (build footprint), using XGS-PON full fibre (Headline numbers table). Headline numbers list premises passed as Approx 2.7 million premises passed (mid-2025 combined Substantial Group footprint) (Headline numbers table). Coverage includes National build covering Yorkshire, North East, North West, Midlands, South East and selected Scottish markets. Build cadence has accelerated significantly in 2024 and 2025. (Coverage notes).
Netomnia is one of the UK's fastest-growing altnet network operators, with 3 million premises passed and a multi-gigabit XGS-PON wholesale network feeding YouFibre and partner ISPs.
What changed: Added answer capsule, key-facts block, question-led headings, speed and premises sections, consumer access guidance, cross-links to cities and compares, and attributed Headline numbers callout for AI citation, 3 June 2026.
Provider directory
For coverage, type, employee estimates and a BroadbandSwitch.uk link for this provider, see the UK provider directory table (613 providers).
Key facts
- Region of focus: Nationwide UK (build footprint) (Headline numbers table).
- Network tech: XGS-PON full fibre (Headline numbers table).
- Premises passed: Approx 2.7 million premises passed (mid-2025 combined Substantial Group footprint) (Headline numbers table).
- Premises ready for service: Targeting 3.0 million by end-2025 (Headline numbers table).
- Customers (latest): ~375,000 combined retail customers across YouFibre and brsk (mid-2025) (Headline numbers table).
What are Netomnia (Substantial Group)'s headline numbers?
| Founded | 2019 |
|---|---|
| HQ | York |
| Region of focus | Nationwide UK (build footprint) |
| Premises passed | Approx 2.7 million premises passed (mid-2025 combined Substantial Group footprint) |
| Premises ready for service | Targeting 3.0 million by end-2025 |
| Customers (latest) | ~375,000 combined retail customers across YouFibre and brsk (mid-2025) |
| Take-up rate | Approx 11.5 percent at end-2024 (combined group) |
| Network tech | XGS-PON full fibre |
| Funding raised | Backed by Advencap, DigitalBridge (£295m equity led Q2 2022) and Soho Square Capital, plus £25m National Wealth Fund loan (October 2024) and £300m of junior debt in 2025 led by I Squared, Palistar, Bain and RMB |
| Last funding round | nexfibre agreed to acquire Substantial Group at a £2bn enterprise value on 18 February 2026; YouFibre and brsk retail brands to pass to Virgin Media O2 for £150m on completion (expected Q3 2026 subject to CMA clearance) (February 2026 (agreed; pending CMA)) |
| INCA member | Yes |
| Last updated | 3 June 2026 |
How fast is Netomnia (Substantial Group)?
Netomnia (Substantial Group) uses XGS-PON full fibre (Headline numbers table). Retail speed tiers depend on the operator's published tariffs and postcode availability.
How many premises has Netomnia (Substantial Group) passed?
This profile lists premises passed as Approx 2.7 million premises passed (mid-2025 combined Substantial Group footprint) and premises ready for service as Targeting 3.0 million by end-2025 (Headline numbers table).
Who is Netomnia (Substantial Group)?
Netomnia is one of the most rapidly-scaling altnet operators in the UK, with 3 million premises passed across a national footprint and an XGS-PON network capable of multi-gigabit tariffs including a headline 8 Gbps consumer offer. Retail distribution runs primarily through YouFibre, with a growing list of partner ISPs. Backed by DigitalBridge among others, Netomnia has been a focal point of UK altnet consolidation discussions in trade press over the past two years.
Where does Netomnia (Substantial Group) operate?
National build covering Yorkshire, North East, North West, Midlands, South East and selected Scottish markets. Build cadence has accelerated significantly in 2024 and 2025.
Which areas is Netomnia (Substantial Group) building in?
York, Leeds, Sheffield, Newcastle, Sunderland, Coventry, Liverpool, Doncaster and dozens of smaller towns.
What partnership routes does Netomnia (Substantial Group) offer?
Wholesale to retail ISPs. Co-marketing in Netomnia footprint via the FBRE network.
FBRE supports AltNets with geo-targeted tenancy, comparison site builds for resellers, and co-marketing collaborations. Network reach is verified at 12,000,000+ impressions and 730,000+ network clicks in the 12 months to 24 May 2026 (rolling average of 2,000+ clicks per day, rising fast). See AltNet marketing for placement and pricing.
How do I get Netomnia (Substantial Group)?
Netomnia (Substantial Group) is a wholesale or infrastructure operator and does not sell broadband directly to most households. Check whether a retail ISP partner serves your postcode (About Netomnia (Substantial Group) section; Coverage notes).
How does FBRE reach Netomnia (Substantial Group)-footprint switchers?
- Geo-targeted tenancy on the FBRE network, single site from £99 per month.
- Postcode checker build that surfaces Netomnia (Substantial Group) where available, from £4,500.
- Co-marketing on the FBRE AltNet Tracker.
- Comparison engine build for partner resellers, from £7,950.
Where is Netomnia (Substantial Group) covered in our research?
FBRE comparison pages featuring Netomnia (Substantial Group):
Netomnia (Substantial Group) is named on these city pages (sample):
- Broadband in Bolton
- Broadband in Leeds
- Broadband in Liverpool
- Broadband in Manchester
- Broadband in Middlesbrough
- Broadband in Newcastle upon Tyne
- Broadband in Sheffield
- Broadband in Sunderland
See also UK broadband by city for the full city index.
Where does this Netomnia (Substantial Group) profile data come from?
This profile uses INCA member published data where available, the operator's published trading updates and press releases, Ofcom Connected Nations data, and Companies House filings. Figures marked "data pending" reflect commercially confidential or not-yet-published numbers. See methodology for sourcing detail.