TL;DR
- The Shared Rural Network (SRN) was agreed between the UK Government and EE, O2, Three, and Vodafone in 2020 to extend 4G coverage to 95% of the UK landmass.
- The programme has two strands: a government-funded strand targeting total not spots, and an industry-funded strand targeting partial not spots.
- Each of the four MNOs has individual coverage obligations embedded in their spectrum licences, monitored by Ofcom.
- Coverage is measured against Ofcom's 100-metre grid methodology using the same standards as the annual Connected Nations reports.
- The target completion date for the industry strand is the end of 2026; the government strand is expected to follow thereafter.
What the Shared Rural Network Is
The Shared Rural Network is a formal programme, backed by a legal agreement between the UK Government and the four major mobile network operators, to significantly expand 4G coverage across rural parts of England, Scotland, Wales, and Northern Ireland. The programme was announced in March 2020 and is overseen jointly by the Department for Science, Innovation and Technology (DSIT) and Ofcom. Its central commitment is to raise 4G geographic coverage from approximately 91% of the UK landmass at the time of the deal to a target of 95%.
The SRN operates on the principle of infrastructure sharing in areas where individual operators would not otherwise deploy because the commercial return is insufficient to justify the cost. Rather than each operator building separate masts in the same remote valley, multiple operators can share a single structure, splitting costs and reducing environmental impact. The sharing arrangements are governed by the SRN agreement and facilitated through a new shared infrastructure model that Ofcom monitors for compliance.
The Two Strands of the SRN
The programme divides obligations into two distinct strands based on the type of not spot being addressed. The industry-funded strand deals with partial not spots: locations where at least one operator already provides coverage but others do not. Each of the four operators is individually required to extend its own network so that no location served by any single operator is a dead zone for another. This strand is funded entirely by the operators themselves and is embedded as a licence condition.
The government-funded strand addresses total not spots — locations where no operator currently has coverage. The government committed up to £500 million to fund new shared mast infrastructure in these hardest-to-reach areas. Once built, all four operators are expected to use the shared infrastructure, meaning that previously unserved locations gain access to all four networks simultaneously. This strand involves DSIT commissioning the construction of new shared sites through a procurement process.
Which Operators Are Involved and What They Must Do
All four licensed UK mobile network operators — EE (part of BT Group), O2 (Telefonica UK), Three UK (CK Hutchison), and Vodafone UK — are parties to the SRN agreement. Each has individual coverage obligations written into the terms of their 700 MHz and 3.6 GHz spectrum licences acquired at auction. These licence conditions specify the percentage of UK geography each operator must cover with 4G by defined milestone dates, and Ofcom can take enforcement action if an operator fails to meet its obligations.
The individual obligations are differentiated because each operator's starting coverage position differs. An operator that already covers a higher proportion of the UK landmass may have a smaller absolute coverage gain to deliver under the SRN. Conversely, an operator with a historically weaker rural footprint faces a larger deployment challenge. Ofcom publishes each operator's specific coverage figures in the annual Connected Nations report, allowing year-on-year comparison against licence milestones.
| SRN Strand | Not Spot Type Addressed | Who Funds | Operators Obligated | Coverage Target |
|---|---|---|---|---|
| Industry strand | Partial not spots | EE, O2, Three, Vodafone (own cost) | All four individually | Each operator: defined % of UK landmass by milestone dates |
| Government strand | Total not spots | UK Government (up to £500m) | All four (shared mast) | All operators on each new shared site |
| Overall SRN programme | Both partial and total not spots | Mixed | All four | 95% of UK landmass with 4G |
| Industry strand deadline | Partial not spots | Operators | All four | End of 2026 (as per licence conditions) |
How Coverage Is Measured and Verified
Ofcom measures SRN coverage progress using the same 100-metre-square grid methodology it applies in the annual Connected Nations reports. Operators submit propagation model data for each grid square, specifying predicted outdoor signal strength at the relevant frequency bands. Ofcom applies standardised signal-strength thresholds to determine whether a grid square qualifies as covered. The methodology is publicly documented and has been used consistently across Connected Nations publications, ensuring comparability over time.
Coverage gains claimed under the SRN are subject to audit. Ofcom can commission independent drive and walk testing to validate operator-submitted model data in specific areas. The regulator also uses crowdsourced data from the Ofcom checker to cross-reference predicted coverage against consumer experience. Where significant discrepancies arise, Ofcom can require operators to revise their models or demonstrate coverage through additional testing. This multi-layer verification approach is designed to prevent operators from claiming SRN progress against areas that are not genuinely served in practice.
The SRN Timeline and What Has Happened So Far
The SRN agreement was signed in 2020 with the industry strand obligating operators to deliver individual coverage milestones by the end of 2026. Progress has been monitored through Ofcom's annual Connected Nations publications. The government strand, which involves new construction in total not spots, faces longer lead times due to planning, land access, and procurement processes. DSIT has acknowledged that some government-strand sites are more complex to deliver than originally anticipated, and milestone tracking for this strand is updated through parliamentary written answers and DSIT progress reports.
Operators are required to publish information about their SRN progress in their annual reports to Ofcom. Where an operator falls behind a milestone, Ofcom has the power to investigate and, ultimately, to impose a financial penalty or vary the licence. The Communications Act 2003 and the Wireless Telegraphy Act 2006 underpin these enforcement powers. Ofcom's approach has generally been to engage with operators through the regulatory dialogue process before commencing formal enforcement.
What This Means in Practice
Suppose a farmer named Dai runs livestock on upland ground in Powys, Wales. His postcode sits in a partial not spot: one operator covers the area; the other three do not. Under the SRN, each of the three non-covering operators is individually obligated to extend their network to serve that grid square by 2026. If one of them is slow to deliver, Dai or his local council can check the Connected Nations data, confirm the operator's stated obligation, and raise a formal complaint. Ofcom can then review whether the operator is on track with its licence condition and, if not, initiate compliance engagement. Once coverage extends, Dai can choose the operator that best meets his needs rather than being locked into the only network that previously served his land.
Related Guides
How We Verified This
This article is based on the Shared Rural Network agreement documents published by GOV.UK, Ofcom's Connected Nations reports and methodology statements at ofcom.org.uk, Ofcom's spectrum licence conditions for 700 MHz and 3.6 GHz, and the Communications Act 2003 and Wireless Telegraphy Act 2006 as published on legislation.gov.uk.
Disclaimer: Kaeltripton.com is an independent UK editorial publisher. We are not regulated by Ofcom or the FCA and we do not sell or arrange mobile services, insurance, or financial products. This content is for general information only and is not legal, financial, or technical advice. Rules, prices, and operator policies change. Verify the current position with Ofcom, GOV.UK, the ICO, or your provider before acting. ICO registered ZC135439. Last reviewed: 2026-06-05.
Frequently Asked Questions
What is the Shared Rural Network?
The Shared Rural Network is a programme agreed between the UK Government and the four major mobile operators in 2020 to extend 4G geographic coverage to 95% of the UK landmass. It uses shared infrastructure to address mobile not spots in rural areas — total not spots through government-funded mast construction, and partial not spots through individual operator licence obligations. Ofcom monitors progress through its Connected Nations framework.
Which mobile operators are part of the SRN?
All four licensed UK mobile network operators are party to the SRN: EE (part of BT Group), O2 (Telefonica UK), Three UK (CK Hutchison), and Vodafone UK. Each carries individual coverage obligations written into the terms of their spectrum licences. There are no smaller or virtual operators in the SRN; it is specifically an obligation on the four MNOs that hold their own radio access infrastructure.
What is the SRN coverage target?
The overall programme target is to extend 4G coverage to 95% of the UK landmass, measured as the percentage of 100-metre grid squares in which at least one operator (industry strand) or all operators (government-strand shared masts) provide signal above Ofcom's outdoor voice threshold. Individual operator targets within this overall figure are set out in their respective spectrum licence conditions and published in Ofcom's annual Connected Nations reports.
When will the SRN be completed?
The industry strand, which addresses partial not spots through individual operator obligations, has a target deadline of the end of 2026. The government-funded strand, which addresses total not spots through new shared mast construction, involves longer planning and procurement timelines and is expected to follow. DSIT publishes progress updates; some government-strand sites have faced delays due to planning complexity and land-access challenges.
How is SRN coverage measured?
Ofcom measures SRN coverage using the same 100-metre-square grid propagation modelling it applies in the annual Connected Nations reports. Operators submit predicted signal-strength data for each grid square, and Ofcom applies standardised thresholds to classify squares as covered or not. Independent drive and walk testing can be commissioned to validate model submissions, and crowdsourced data from the Ofcom checker provides a further cross-reference layer.
