If you sell to the public sector, you'll keep meeting the initials "CCS." It's the UK's biggest public procurement body — though as of 2026 it has a new name. Here's what it does and how to work with it.
At a glance
- Crown Commercial Service (CCS) was the UK government's central buying organisation, running frameworks that the whole public sector can buy through.
- On 1 April 2026, CCS combined with several Cabinet Office commercial teams to form the Government Commercial Agency (GCA).
- Existing CCS frameworks remain valid — the rename doesn't change the legality of agreements or live contracts.
- Frameworks are a compliant, pre-approved route for the public sector to buy from vetted suppliers.
- Getting on one means winning a place through a competitive process.
From CCS to GCA
For years, Crown Commercial Service was the executive agency that ran central commercial agreements for UK government. On 1 April 2026, CCS was combined with several Cabinet Office Central Commercial Teams to form the Government Commercial Agency (GCA) — an enhanced executive agency of the Cabinet Office.
Importantly for suppliers: the change is organisational, not legal. GCA has confirmed that the legality of any CCS framework or agreement is unaffected, and existing contracts and call-offs remain valid. If you're on a CCS framework, you stay on it.
What CCS/GCA frameworks are
A framework is a type of commercial agreement that gives the public sector a compliant way to buy products or services from pre-approved suppliers. Rather than every council, department or NHS body running its own full procurement for, say, cloud software, GCA sets up a framework once — and buyers "call off" from it.
For suppliers, a place on a framework is valuable: it makes you visible to thousands of public sector buyers and lets them buy from you without a full tender each time. (Our guide to what a framework agreement is covers the mechanics in more depth.)
A well-known example is G-Cloud (agreement RM1557.14), the framework for cloud hosting, software and support — see G-Cloud and the Digital Marketplace explained.
Closed vs open frameworks
The Procurement Act 2023 introduced a distinction worth knowing:
- Closed frameworks — once awarded and live, no new suppliers can join. If you miss the application window, you wait for the next iteration.
- Open frameworks — allow suppliers to join or rejoin at different points during the framework's life, and must reopen at least once in the first three years.
This matters for timing your applications: with a closed framework, the application window is your only chance until it's re-procured.
How to get on a framework
The route is broadly:
- Find opportunities — watch Find a Tender, Contracts Finder, and GCA's list of upcoming agreements for frameworks being established.
- Register on the relevant eSourcing portal and express interest.
- Complete the selection stage — a Procurement Selection Questionnaire and the tender itself.
- Submit a competitive tender — your bid is assessed against the published criteria.
Note that registering and expressing interest does not guarantee a place — you still have to win it on the merits, against established suppliers who have been on the previous iteration for years. Watch the official portals for framework establishment notices in your category, and treat getting onto one as a bid in its own right rather than an administrative step.
Frequently asked questions
What is Crown Commercial Service?
It was the UK government's central commercial organisation, running frameworks the whole public sector can buy through. On 1 April 2026 it became the Government Commercial Agency (GCA).
Did CCS frameworks change when it became GCA?
No. The rename is organisational. Existing frameworks, agreements and call-offs remain valid.
How do I get onto a CCS/GCA framework?
Find the opportunity on the official portals, register on the eSourcing system, complete the selection questionnaire, and submit a competitive tender. Winning a place is competitive — registering alone doesn't guarantee it.
What's the difference between a closed and open framework?
A closed framework can't take new suppliers once live. An open framework lets suppliers join at set points and must reopen at least once in its first three years.