Network Services 4 (RM6377) Framework Explained
Network Services 4 (RM6377) is the upcoming £7 billion Government Commercial Agency framework for telecommunications, connectivity, unified communications and IoT across the UK public sector. The Government Commercial Agency timetable gives tender publication as August 2026 and award as March to April 2027; the framework runs from 17 February 2027 to 16 February 2035, replacing RM6116 Network Services 3. Confirm the live position on Find a Tender.
Key facts at a glance
- Reference
- RM6377
- Value
- £7 billion excluding VAT
- Tender notice
- The GCA timetable gave an estimated August 2026, which has passed. We have not confirmed publication on Find a Tender, so check there before planning
- Framework term
- 17 February 2027 to 16 February 2035 (eight years)
- Replaces
- RM6116 Network Services 3
- Scope
- Telecommunications, connectivity, unified communications and IoT for the UK public sector
What is Network Services 4?
Network Services 4 (RM6377) is the Government Commercial Agency framework through which the UK public sector will buy telecommunications and network services from 2027. The scope spans connectivity, traditional and IP telephony, unified communications, contact centre services and Internet of Things capability.
At £7 billion excluding VAT over an eight-year term, RM6377 is the principal route to market for network suppliers selling to central government, health, local government, education, policing and defence buyers. It replaces RM6116 Network Services 3, which expires in July 2027.
When does the RM6377 tender open?
The Government Commercial Agency timetable gave tender publication on the Find a Tender Service as August 2026 and framework award as March to April 2027, and the GCA page labels those as estimated dates rather than fixed ones. August 2026 has now passed. We have not confirmed the notice live on Find a Tender ourselves, and we are not going to tell you it has published when we have not seen it, so treat Find a Tender and the GCA agreement page as the only authorities and check both before you plan around a date. The framework itself runs from 17 February 2027 to 16 February 2035. Supplier engagement began in August 2025, so the specification has been shaped over a full year of market input.
An eight-year framework raises the stakes: suppliers who miss the window are effectively locked out of the compliant route for most of a decade. Preparation before the notice, especially security accreditations and reference deployments, is the difference between a considered bid and a rushed one.
How Glaxtons helps network suppliers win a place
Glaxtons writes technology framework bids end to end, from G-Cloud to DOS to network and connectivity agreements, with a 93 percent success rate across more than 500 submissions and a 100 percent record on G-Cloud applications.
For RM6377 we help suppliers evidence information security (ISO 27001, Cyber Essentials Plus), service management standards, real deployment case studies and compliant pricing, then manage the full portal submission.
Who buys through Network Services 4
The buyers are UK public sector organisations. A telecommunications and connectivity agreement of this size is the kind of route to market used across central government departments and their arms length bodies, the NHS, local authorities, education and the emergency services, because those organisations need a compliant way to buy and rarely have capacity to run a full procurement of their own for every network refresh. Confirm the eligible buyer definition in the notice when it publishes rather than assuming it matches the predecessor agreement.
In practice your customer is a procurement team acting for a technical team, and the two want different things. The technical team wants resilience, low migration risk and a named engineering contact. The procurement team wants auditable evidence, clear service credits and a position it can defend at audit. Responses that speak to only one of those audiences score badly. Write for both, and keep the claims you make at call off level consistent with the claims you make at framework level, because buyers do compare them.
How suppliers get a place
Places on a public sector framework of this kind are won through an open competition advertised on Find a Tender. A supplier registers interest, downloads the documents, answers a selection stage covering legal standing, financial standing, insurance and grounds for exclusion, then answers an award stage covering quality, service delivery and price. Everything is submitted through the e-tendering portal named in the notice, by a fixed deadline, in the format specified. Late or non compliant submissions are not assessed, whatever their technical quality.
The lot structure, the number of suppliers per lot and the submission mechanics for RM6377 are not things to assume. They will be set out in the tender documents when those publish. What you can do now is decide which services you can evidence delivering at public sector scale, and which you would be bidding on ambition rather than record. Bidding wide on capability you cannot evidence is the most common way a technically strong supplier loses marks it did not need to lose.
Assessment is against published criteria, and under the Procurement Act 2023 the buyer must apply them as written. That gives you a straightforward discipline: read the criterion, answer the criterion, and let the evaluator find each element without hunting for it. Use the clarification window if scope wording is genuinely ambiguous, and read every clarification response the buyer issues, because those answers frequently narrow or widen the evidence expected and are published to all bidders at the same time.
What actually scores on a network services bid
The evidence that decides these bids takes months to assemble, which is exactly why preparation before a notice publishes is worth doing. ISO 27001 certification, Cyber Essentials Plus, service management certification and, where the services touch sensitive networks, assurance aligned to National Cyber Security Centre guidance all carry lead times measured in months once you count gap analysis, remediation and the audit itself. A certificate you start pursuing after the notice publishes will not be in place in time.
Financial standing is checked, not asserted. Expect the selection stage to look at filed accounts, turnover relative to the contract values you are bidding for, and ratios drawn from those accounts. If your last filed accounts are weak, or your group structure means the bidding entity is not the entity holding the balance sheet, work out now how you will explain it and what parent company support or guarantee you can offer. That conversation takes longer than a tender window allows.
Case study evidence is the other long lead item. Evaluators reward specifics: the organisation type, the size of the estate, the migration approach, the service levels actually measured, and what went wrong and how it was put right. Collect that from delivery teams while the detail is still recoverable, and secure written customer permission to reference it. Numbers retro fitted to a story you half remember read exactly like what they are, and they score accordingly against a trained evaluator.
Social value carries real weight in public sector award models, and it is scored on commitments you can measure and deliver rather than on intentions. Pricing needs the same rigour: a rate you cannot sustain across an eight year term is a liability, not a win, so model the whole term and not the first year. If you want a second read of your evidence base before the notice appears, call 020 3668 5488, and keep checking Find a Tender in the meantime.
Before the notice publishes
Confirm which of your services you can evidence delivering for a public sector customer, and which you cannot. Book the gap analysis and audit dates for ISO 27001 and Cyber Essentials Plus now, not after a notice appears. Pull your filed accounts and decide how you will present financial standing for the exact legal entity that will bid. Write up three reference deployments with measured service levels and secure written customer permission to use them. Check find-tender.service.gov.uk and gca.gov.uk/agreements/RM6377 weekly, and record the date and what you saw.
Who should apply?
RM6377 is relevant to suppliers across network and communications services, including:
Frequently asked questions
What is NS4?
NS4 is the common shorthand for Network Services 4, reference RM6377, the Government Commercial Agency and Crown Commercial Service framework covering telecommunications, connectivity, unified communications and Internet of Things services for the UK public sector. It is valued at £7 billion excluding VAT, and the framework term runs from 17 February 2027 to 16 February 2035. It replaces RM6116 Network Services 3 as the public sector network services framework.
What does RM6377 replace?
RM6377 Network Services 4 replaces RM6116 Network Services 3. Replacement means a fresh competition rather than an extension, so a place on RM6116 does not carry across, and the requirement, the evaluation model and the commercial terms are written new. RM6116 delivery is genuine evidence of performance at public sector scale, which helps a submission, but it confers no entitlement. Suppliers with no Network Services 3 history are not excluded.
When does Network Services 4 start?
The RM6377 framework term runs from 17 February 2027 to 16 February 2035, an eight year period, and the Government Commercial Agency timetable gives award as March to April 2027. The Government Commercial Agency presents those under a heading labelling them estimated dates, so treat them as planning assumptions rather than commitments, and confirm the current position at gca.gov.uk/agreements/RM6377 and on Find a Tender before committing resource.
Who runs the Network Services 4 framework?
Network Services 4 is run by the Government Commercial Agency, the Crown Commercial Service body that establishes central government framework agreements. The agreement page sits at gca.gov.uk/agreements/RM6377, and the tender notice, when it publishes, appears on Find a Tender at find-tender.service.gov.uk. Those two sources are the only authorities on timetable, scope and lot structure, and they are where a supplier should check the position rather than relying on commentary.
Has the RM6377 tender been published on Find a Tender?
The Government Commercial Agency timetable gave an estimated Find a Tender notice of August 2026, which has passed. As of 21 September 2026, gca.gov.uk still showed the same timetable under a heading labelling the dates estimated, with no status label on the agreement, and we had not seen the notice on Find a Tender. We will not describe an estimate as a publication, so check both sources for the current position.
What should suppliers do before the Network Services 4 notice publishes?
Do the work that cannot be done inside a tender window. Get ISO 27001 and Cyber Essentials Plus current, including any remediation the audit throws up. Confirm the financial standing of the exact legal entity that will bid. Write up reference deployments with measured service levels and written customer permission. Decide which services you can evidence rather than aspire to. Then monitor Find a Tender and the agreement page weekly.
What is the Network Services 4 framework?
Network Services 4 (RM6377) is the upcoming Government Commercial Agency framework for telecommunications, connectivity, unified communications and IoT services across the UK public sector. It is valued at £7 billion excluding VAT and replaces RM6116 Network Services 3.
When does the RM6377 tender open?
The Government Commercial Agency timetable gives tender publication as August 2026 and award as March to April 2027. The framework runs from 17 February 2027 to 16 February 2035. Check Find a Tender for the live notice before planning.
I am on Network Services 3. Do I need to rebid?
Yes. RM6116 expires in July 2027 and places do not carry over to RM6377. Incumbents must bid again, and call-off performance data from RM6116 is strong evidence in a new submission.
Can Glaxtons help with an RM6377 bid?
Yes. Glaxtons writes technology framework applications with a 93 percent success rate across more than 500 submissions. We prepare security accreditations and evidence before the notice and write the full response once the window opens. Call 020 3668 5488 or send us the deadline and we will come back with a Teams time.
Eight Years of Public Sector Network Spend
The RM6377 notice is timetabled for August 2026 with award in spring 2027. Prepare your accreditations and evidence now with a Glaxtons framework specialist. Call 020 3668 5488 or send us the deadline and we will come back with a Teams time.