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°Õ³ó±ðÌýSeptember 2025ÌýNational Rolling Open Market Review (NR OMR) ran fromÌý1 September to 1 October 2025.Ìý

Building Digital UK (BDUK)ÌýrequestedÌýthat suppliersÌýsubmitÌýtheir national broadband infrastructure plans,Ìýso as toÌýconfirm where gigabit-capable broadband infrastructure currently exists or is planned to be built in the UK over the next 3 years.Ìý

We have now completed evaluating all submissions received and issued formal responses to all suppliers whoÌýsubmittedÌýinformation over the course of this exercise; including the subsidy control classification treatment of their existing or planned qualifying broadband infrastructure.Ìý

Details on the classification system of Gigabit White, Grey, Black and Under Review and methodology can be found in the section below BDUK Classifications and methodology for this National Rolling Open Market Review.

Further information on the NR OMR/Open Market Review (OMR)/Public Review (PR) process and how we reach our conclusions can be found in our Subsidy Control Guidance document.

1. Purpose of the National Rolling Open Market ReviewÌý

The purpose of the NR OMR, whichÌýoperatesÌýon a 4-monthly basis (January,ÌýMayÌýand September), is to ensure that BDUK has the most up to date information about suppliers’ existing and planned build over the next 3-year period.ÌýÌý

This supports better strategic planning and prioritisation of our procurement Intervention Areas (IAs), has streamlined theÌýpreviousÌý‘local’ OMR process and minimises the risk of BDUK intervening in an area that would disrupt existing commercial plans.Ìý

For further guidance on how BDUKÌý»å±ð³Ù±ð°ù³¾¾±²Ô±ð²õÌý´Ç³Ü°ù IAs for subsidy, please refer to Section 6 ‘Determining Intervention Areas’ ofÌýourÌýSubsidy Control Guidance document.Ìý

Data collected from the NR OMR is also used to inform GigaHubs and Gigabit Voucher eligibility as well as support the development of other potential BDUK interventions.Ìý

2. BDUK classifications andÌýmethodologyÌýfor this National Rolling Open Market Review

During the NR OMR, BDUK categorised premises as Gigabit White, Grey, Black or Under Review.Ìý

Subsidy control classifications are set out below:

• White - indicates premises with no gigabit network infrastructure and none is likely to be developed within 3 years ^{[footnote 1]}

• Grey - indicates premises where a single qualifying gigabit infrastructure from a single supplier is available, or is to be deployed within the coming 3 years ^{[footnote 1]}

• Black - indicates premises with two or more qualifying gigabit infrastructures from different suppliers being available, or will be deployed within the coming 3 years ^{[footnote 1]}

• Under Review - indicates premises where suppliers have reported current or planned commercial broadband coverage, but where claimed current gigabit coverage has not been verified, or, in respect of planned build, where evaluators are confident that gigabit infrastructure will be delivered, but some risks to delivery remain, or there are some gaps in evidence

BDUK will only provide subsidy to target premises that have beenÌýdesignatedÌýas White. Premises which have beenÌýdesignatedÌýas Under Review may be included within the Deferred Scope of a procurement. Where this is the case, a further review will be undertaken to confirm whether they are Grey or White before they are released for build.Ìý

In accordance withÌýthe OMR/PR processes, supplier dataÌýsubmittedÌýduring the NR OMR has been mapped usingÌýa methodologyÌýthat protects commercially sensitive supplier data. To reflect this sensitivity, we will only release White and Under Review Unique Property Reference Numbers (UPRNs).Ìý

A full list of resulting White and Under Review UPRNs from theÌýSeptember 2025ÌýNR OMR are available on request to suppliers viaÌýUKGigabitOMRPR@bduk-gov-uk.atlassian.net.

3. Summary ofÌýSeptember 2025ÌýNational Rolling Open Market Review findings - premises eligibilityÌý

The outcome of theÌýSeptember 2025ÌýNR OMR is summarised in terms of Gigabit White, Grey, Black and Under Review postcodes and premises below which incorporates all regions across England and WalesÌýonly.Ìý

Premises classification	Number of premises
White	2,810,505
Under Review	2,636,915
Grey	9,364,815
Black	16,182,121
Total	30,994,356

4. Differences between National Rolling Open Market Review and Public Review outcome classificationsÌý

Please note, the data held by BDUK following a PR is used to define IAs for procurements at a point in time.Ìý

Also, not all active suppliers opted to contribute to thisÌýSeptember 2025ÌýNR OMR process on this occasion.Ìý

Therefore, NR OMR data may differ from the outcome of a PR due to the point in time that the data was captured, or due to different suppliers providing responses.Ìý

IA eligibility is therefore defined using a combination of PR and NR OMR data (ieÌýwhere a supplier has not contributed to the NR OMR, the PR would be expected to take precedence).Ìý

The dataÌýsubmittedÌýto the NR OMR is processed in the same way as thatÌýsubmittedÌýtoÌýpreviousÌý‘local’ OMRs and is used for mapping categorisations of UPRNs. This willÌýgenerally beÌýfed into a PR process for new areas. However, If BDUK receives new data for UPRNs which have been the subject ofÌýa previousÌýPR determination, if it meets the evidential requirements, BDUK may use NR OMR data to update theÌýpreviousÌýareas by area PR determinations at our own discretion.Ìý

5. ÌýSeptember 2025ÌýNational Rolling Open Market Review ConclusionÌýÌý

For the purposes of theÌýSeptember 2025ÌýNR OMR, BDUK was pleased to extend the invitation to all suppliers toÌýsubmitÌýa response for consideration.Ìý

°Õ³ó±ðÌýUPRN-levelÌýSeptember 2025ÌýNR OMR outputs have been provided via 10 separateÌýzipÌýfiles geographically broken down byÌýregion and then further broken down by Local Authority District (LAD).

To access these files, please visit the September 2025 OMR and premises in BDUK plans (England and Wales) page.

Please note, this is a change in approach since the January 2025 NR OMR, replacing the former postcode and UPRN-level outputs and maps with a single transparency data release, aligned with the NR OMR collections.

The region outputs are split as follows:

• East Midlands
• East of England
• London
• North East
• North West
• South East
• South West
• Wales
• West Midlands
• Yorkshire and the Humber

Please see our latest Project Gigabit update for further details on Project Gigabit procurement timelines along with Project Gigabit contracts for details of contracts awarded by BDUK.

°Õ³ó±ðÌýJanuary 2026Ìýiteration of the NR OMR is currently live, and due to close for responses onÌý6 FebruaryÌý5pm. BDUK will begin undertaking initial evaluation activities of supplier responses shortly after this closing date.Ìý

Please see the January 2026 Request For Information

If you have any questions on the NR OMR process, please contact us atÌýUKGigabitOMRPR@bduk-gov-uk.atlassian.net.Ìý

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This information has been published (i)Ìýin accordance withÌýthe Gigabit Infrastructure Subsidy guidance: transparency (monitoring and reporting) which sets out transparency requirements for BDUK, local bodies and suppliers in relation to the Gigabit Infrastructure Subsidy scheme (GIS); and (ii) as part of a continuous Open Market Review and Public Review process under the GIS. ItÌýcontainsÌýpublic sector information licensed under the Open Government Licence v3.0 and has been informed by information provided by other third parties (including suppliers) which is subject to change. Whilst this information was believed to beÌýaccurateÌýat the time it was published, DSIT (including BDUK) does not and cannotÌýwarrantÌýor guarantee its accuracy and accepts no liability for any losses that may arise from any use of, or reliance on, this information. External organisations, such as suppliers and local bodies, areÌýadvised to seekÌýtheir own legal advice if they wish to use or rely on this information.