If you’re job-hunting on a UK work visa — or you’re an employer trying to verify a competitor or a job offer — you’ll eventually run into the same question: which companies in the UK are actually licensed to issue a Certificate of Sponsorship (CoS)?
The answer isn’t a blog post you can bookmark — it’s a live UK government database that changes constantly. Below is exactly how it works, what it contains, and how to search it properly so you never rely on outdated information.
What Is a Certificate of Sponsorship (CoS)?
A CoS is not a physical document — it’s an electronic record assigned to a worker through the Home Office’s Sponsorship Management System (SMS). It’s the mechanism that lets a licensed UK employer “vouch” for a specific worker and role, and it’s a mandatory step before that worker can apply for most UK work visas, including the Skilled Worker visa, Global Business Mobility routes, and other Temporary Worker routes.
Crucially: only organisations holding a valid UK sponsor licence can assign a CoS. Not every employer can do this. They must apply to the Home Office, pass eligibility and suitability checks, and appoint accountable staff — an Authorising Officer, a Key Contact, and at least one Level 1 User — to manage the licence.
Where the Official UK Sponsor List Actually Lives
The authoritative, constantly-updated register of licensed sponsors is published by the UK Home Office on GOV.UK:
👉 Register of licensed sponsors: workers
From there you can either:
- Download the full CSV — a large file, currently running to roughly 11MB across 50 columns of data, or
- Use the online preview/search tool directly on GOV.UK to look up a specific organisation by name.
This is the same underlying dataset that most third-party “UK sponsor list” blogs and directories repackage. Going straight to the source guarantees you’re not searching a stale copy.
Why a Static “Sponsor List” Blog Post Won’t Help You
Worth being blunt about: the register changes constantly. The Home Office typically updates it multiple times a month — companies are added as new licences are granted, and companies are removed the moment a licence is revoked, suspended, or voluntarily surrendered. A screenshot or a downloaded copy from even a few weeks ago can already be wrong.
So instead of reproducing a snapshot of company names (which would be outdated by the time you read it), here’s what’s actually in the register and how to search it correctly.
What Each Entry in the UK Sponsor Register Tells You
| Field | What it means |
|---|---|
| Organisation name & town/city | Legal entity and location on file |
| Licensed route(s) | Whether they hold a Worker licence, a Temporary Worker licence, or both |
| Visa categories | The specific sub-routes they can sponsor under (e.g. Skilled Worker, Global Business Mobility, Seasonal Worker, Charity Worker, Government Authorised Exchange, Creative Worker, etc.) |
| Sponsorship rating | A-rated or B-rated |
A-Rated vs B-Rated Sponsors — Why It Matters
- A-rated: The sponsor is fully compliant and can assign new CoS without restriction.
- B-rated: The sponsor has been found non-compliant in some way and is on a probationary action plan. Critically, a B-rated sponsor usually cannot issue new Certificates of Sponsorship until upgraded back to A-rating. If you’re job-hunting, this rating is worth checking as closely as the licence itself.
- Suspended or revoked: The organisation cannot sponsor at all — and if revoked, will typically disappear from the register entirely.
How to Search the UK Sponsor Register (Step by Step)
- Go to the GOV.UK publication page.
- Download the CSV, or use the in-browser preview (shows the first 1,000 rows for a quick look).
- Open it in Excel, Google Sheets, or similar.
- Filter by:
- Town/City — e.g. narrow to London, Manchester, Birmingham
- Route — Worker vs Temporary Worker
- Visa category — e.g. Skilled Worker only
- Rating — filter out anything not A-rated for the safest options
This filtering approach beats any fixed list, because it lets you regenerate an accurate, up-to-date result every time you check.
Important: Being on the Register Isn’t the Whole Story
A few things worth flagging, especially for job seekers:
- Being licensed doesn’t mean a company is actively hiring or has any CoS allocation available right now. It just means they’re legally able to sponsor if they choose to and have capacity.
- The sponsor licence number itself is not published on the public register — legitimate employers can and should confirm it directly if asked.
- Always cross-check a company’s presence on the register against other signals: Companies House records, an official careers page, and direct contact — especially given a rise in sponsorship-related job scams targeting overseas applicants.
- Recheck close to application time. A company’s rating or licence status can change between a job offer being made and a visa application being submitted.
Quick FAQ: UK Sponsor Licence Register
How often is the UK sponsor list updated? Generally monthly, though the Home Office has published updates more frequently during busy periods.
Can I download a full list of UK visa sponsor company names? Yes — via the CSV download link on the GOV.UK register page. It’s the only version worth trusting for a “full list,” since anything hosted elsewhere is just a copy that may already be outdated.
Does the register cover student or visitor visa sponsors? No — this register only covers Worker and Temporary Worker routes (i.e. work visas). Educational institutions sponsoring international students are on a separate register.
How Callmaimo Consulting Can Help
Reading a spreadsheet with 50 columns and thousands of rows isn’t most people’s idea of a good afternoon and for job seekers weighing up an overseas move, or employers trying to sanity-check a sponsorship offer, the register alone doesn’t answer every question. This is where a consultancy like Callmaimo Consulting can add value alongside the official GOV.UK data:
- Turning the raw register into something usable. Filtering the CSV by industry, city, or visa category and cross-referencing it against a specific job offer or employer name.
- A second opinion on a job offer. Checking whether the sponsoring organisation’s details match what’s on the public register, and flagging any inconsistencies worth asking the employer about directly.
- Explaining what A-rated vs B-rated actually means for your situation — for example, why a B-rated employer may not currently be able to issue you a CoS even if they’ve offered you a role.
- Helping you build a document checklist (proof of qualifications, work history, language test results, etc.) so you’re ready to move quickly once a genuine CoS is issued.
- Scam-awareness support. Given the well-documented rise in fake “sponsorship” and recruitment scams targeting overseas applicants, having someone sanity-check a suspicious offer before you pay a fee or hand over documents can save real money and stress.
Interested in working with Callmaimo Consulting? Reach out to discuss your specific situation and what kind of support, general guidance vs. regulated advice, best fits your needs.
