UK Sponsor Register: How to Verify Employers Safely
Author
UK Sponsor Search Team
Published
29 January 2026
Reading Time
"The sponsor register is your first line of defense against fraud and disappointment. Learn how to read it properly, what A-rated vs B-rated really means, and the verification steps that could save your visa application."
Priya Sharma had done everything right, or so she thought. The Manchester-based software company had offered her £48,000, well above the threshold. They'd sent professional-looking offer letters, conducted multiple interviews, and seemed completely legitimate. She'd even googled them and found a sleek website with client testimonials. It wasn't until she tried to verify them on the sponsor register that her dream job began to unravel. The company name appeared on the register, but with a completely different address in Birmingham, not Manchester. When she dug deeper, she discovered she'd been corresponding with scammers who were impersonating a real licensed sponsor.
Priya's near-miss illustrates why understanding the UK sponsor register isn't just helpful, it's essential. This publicly available database is your most powerful tool for verifying potential employers, but only if you know how to read it properly.
What the Sponsor Register Actually Is
The UK sponsor register is a searchable database maintained by UK Visas and Immigration (UKVI) that lists every organisation currently licensed to sponsor foreign workers. It's updated regularly and is freely accessible to anyone. Think of it as the official registry of companies that have been vetted and approved by the Home Office to hire international workers.
But here's what many people don't realize: being on the register doesn't mean a company is actively hiring, financially stable, or even a good employer. It simply means they've met the Home Office requirements for a sponsor licence and haven't yet had it revoked. The register is a starting point for verification, not a seal of approval.
The Anatomy of a Sponsor Register Entry
When you search the register, each entry contains several key pieces of information. Understanding what each field means, and what it doesn't mean, is crucial.
Organisation Name: This is the legal name of the entity that holds the licence. It might not match the trading name or brand name you're familiar with. For example, you might know a company as "TechStart UK" but their legal name on the register is "TechStart Solutions Limited." Both are correct, but you need to verify the connection.
Town/City and County: This indicates where the sponsor is based, but it doesn't necessarily mean that's where you'll work. A company headquartered in London might have offices in Manchester, Edinburgh, and Birmingham. The register shows their main address, not all their locations.
Type & Rating: This is where things get interesting. The rating, A or B, tells you about the sponsor's compliance history. We'll dive deep into this shortly.
Route: This indicates which visa routes the sponsor is licensed for. A company might be licensed for Skilled Worker but not for other routes like Global Talent or Scale-up. Make sure they're licensed for the specific route you need.
A-Rated vs B-Rated: What It Really Means
The sponsor rating system is often misunderstood, so let's break it down clearly.
A-Rated Sponsors are in good standing with UKVI. They've met their compliance obligations, maintained proper records, and haven't raised any red flags. An A-rating means the sponsor can assign Certificates of Sponsorship without restrictions and is generally considered reliable from an immigration compliance perspective.
However, and this is important, an A-rating doesn't tell you anything about the company as an employer. An A-rated sponsor could still be a terrible place to work, financially unstable, or poorly managed. The rating only reflects immigration compliance, not business health or workplace quality.
B-Rated Sponsors are under closer scrutiny. They may have failed to meet some compliance obligations, raised concerns during a UKVI audit, or been placed on an action plan to address issues. A B-rating doesn't automatically mean "avoid this employer," but it does mean "proceed with extra caution."
B-rated sponsors often face restrictions. They might not be able to assign new Certificates of Sponsorship until they address their compliance issues. They're essentially on probation. If they don't improve, their licence could be revoked.
Here's the nuance many people miss: a company can move between ratings. An A-rated sponsor that fails an audit might be downgraded to B. A B-rated sponsor that successfully completes their action plan can be upgraded to A. The rating you see today might not be the rating that existed when you first researched the company.
Routes and Categories: Why This Matters More Than You Think
Not every sponsor is licensed for every visa route. This seems obvious, but it trips up many applicants who assume that because a company sponsors workers, they can sponsor anyone.
A company might be licensed for:
- Skilled Worker (the most common route)
- Senior or Specialist Worker (for intra-company transfers)
- Global Talent (for exceptional talent in specific fields)
- Scale-up (for fast-growing companies)
- Other routes (various specialized categories)
If you need a Skilled Worker visa but the company is only licensed for Senior or Specialist Worker, they cannot sponsor you, even if they want to. They would need to apply for an additional licence, which takes time and isn't guaranteed.
This is why you should never rely on a recruiter or HR person's verbal assurance that "we can sponsor you." Verify it yourself on the register.
The Step-by-Step Verification Process
Here's how to properly verify a potential sponsor:
Step 1: Get the Exact Legal Name
Ask your potential employer for their exact legal name as it appears on their sponsor licence. Don't assume, ask explicitly. Many companies operate under trading names that differ from their legal names.
Step 2: Search the Register
Go to the official UK government sponsor register (search for "UK sponsor register" on gov.uk). Use the exact legal name. If you can't find them, try variations, sometimes companies include "Limited" or "Ltd" inconsistently.
Step 3: Verify the Details
Once you find the entry, check:
- Does the address match what you've been told? If they said you'll work in Leeds but the register shows London, ask why.
- Is the rating A or B? If it's B, ask the employer directly about their compliance status.
- Are they licensed for the route you need? Confirm it explicitly lists "Skilled Worker" or whichever route applies to you.
Step 4: Cross-Reference with Other Sources
- Check Companies House to verify the company exists and see their financial filings
- Look for news articles about the company, especially related to immigration or employment issues
- Search for the company name plus "sponsor licence revoked" or "immigration compliance"
- Check review sites like Glassdoor, but take reviews with a grain of salt
Step 5: Ask Direct Questions
Don't be shy about asking your potential employer:
- "What is your exact legal name as it appears on your sponsor licence?"
- "What is your current sponsor rating?"
- "Have you successfully sponsored workers in the past year?"
- "Which occupation code will you use for my role?"
Legitimate sponsors will answer these questions readily. Evasiveness is a red flag.
Red Flags That Should Make You Pause
Certain warning signs should trigger immediate skepticism:
Not on the Register: If you can't find the company on the register at all, and they claim to be licensed, something is wrong. Either they're lying, you have the wrong legal name, or their licence was recently revoked.
Address Mismatch: If the register shows Birmingham but they're offering you a job in Manchester, this needs explanation. It might be legitimate (they have multiple offices) or it might indicate fraud.
"We're Applying for Our Licence": Some companies offer jobs contingent on getting their sponsor licence. This is risky. Licence applications can take months and aren't guaranteed. Don't resign from your current job or make major life decisions based on a licence that doesn't exist yet.
Payment Requests: Any request to pay for a Certificate of Sponsorship, "processing fees," or "administrative costs" is a massive red flag. Legitimate sponsors cannot charge workers for CoS or related fees, it's explicitly prohibited and can result in licence revocation.
Pressure and Urgency: Scammers create artificial urgency. "We need your decision today" or "Pay now or lose the opportunity" are classic pressure tactics. Legitimate recruitment processes don't work this way.
Too Good to Be True: If you're offered a high-salary role with minimal qualifications, no proper interview, or after a cursory application, be very skeptical. Legitimate sponsors conduct thorough recruitment.
The B-Rating Dilemma: Should You Accept an Offer?
This is a common question: you've found a great opportunity, but the sponsor is B-rated. Should you proceed?
The answer isn't black and white. Here's how to think through it:
Understand Why They're B-Rated: Ask the company directly. If they're transparent about being on an action plan and can explain what they're doing to address it, that's a good sign. If they're evasive or dismissive, that's concerning.
Assess the Risk: A B-rating means there's some risk their licence could be revoked. If that happens, your visa could be curtailed (shortened), giving you typically 60 days to find a new sponsor or leave the UK. Can you handle that risk?
Consider Your Alternatives: If you have multiple offers, an A-rated sponsor is generally safer. But if this is your only viable option and you've done thorough due diligence, a B-rated sponsor might still be worth the risk.
Get Professional Advice: If you're unsure, consult an immigration lawyer. They can sometimes access additional information about why a sponsor is B-rated and assess the risk more accurately.
Special Cases and Complications
Some situations add complexity to sponsor verification:
New Sponsors: A company might have just received their licence and have no track record. They're not necessarily risky, but you can't assess their history. Extra due diligence on the company itself becomes more important.
Large Corporations: Big companies often have multiple legal entities. "Google UK Limited" might be different from "Google Cloud UK Limited." Make sure you're verifying the specific entity that will sponsor you.
Recruitment Agencies: Some agencies are licensed sponsors who hire workers and then place them with clients. This is legitimate but adds complexity. Verify both the agency's licence and understand the arrangement clearly.
Subsidiaries and Parent Companies: A UK subsidiary might be the licensed sponsor even though you interviewed with the parent company. Verify which entity holds the licence and which will actually employ you.
What the Register Doesn't Tell You
It's equally important to understand what the sponsor register doesn't reveal:
Financial Stability: A company could be on the verge of bankruptcy but still have an A-rating. The register doesn't reflect financial health.
Workplace Quality: An A-rated sponsor could have terrible management, poor working conditions, or high turnover. The rating only reflects immigration compliance.
Active Recruitment: Being on the register doesn't mean they're currently hiring. They might have a licence but no open positions.
Specific Locations: The register shows the main address, not all locations where they might sponsor workers.
Historical Issues: If a company had compliance problems that they've since resolved, you won't see that history. The rating reflects current status only.
The Impersonation Scam: A Growing Threat
Remember Priya's story from the opening? Scammers increasingly impersonate real licensed sponsors. They find a legitimate company on the register, create fake websites and email addresses that look similar, and approach job seekers with fraudulent offers.
Here's how to protect yourself:
Verify Contact Details Independently: Don't trust email addresses or phone numbers provided in unsolicited job offers. Look up the company's contact details independently and reach out through those channels to verify the opportunity is real.
Check Domain Names Carefully: Scammers use domains that look similar to legitimate ones. "techstart-uk.com" might be fake while "techstart.co.uk" is real. Pay attention to subtle differences.
Request Video Calls: Legitimate employers will conduct video interviews. If someone refuses or makes excuses, be suspicious.
Verify the Interviewer: Ask for the full name and job title of everyone you speak with. Then look them up on LinkedIn or the company website to verify they actually work there.
Practical Examples: Reading the Register in Action
Let's walk through some real-world scenarios:
Scenario 1: The Straightforward Case
You search for "Acme Tech Solutions Ltd" and find:
- Organisation Name: Acme Tech Solutions Limited
- Town/City: London
- Rating: A
- Route: Skilled Worker
This is straightforward. The name matches, they're A-rated, and they're licensed for Skilled Worker. You'd still do additional due diligence on the company itself, but from a sponsor verification perspective, this looks good.
Scenario 2: The Name Mismatch
You're offered a job by "TechStart UK" but can't find them on the register. You search variations and find "TechStart Solutions Limited" in Manchester. You ask the recruiter, who confirms that's their legal name and TechStart UK is just their trading name. This is legitimate, many companies operate this way.
Scenario 3: The B-Rating
You find your potential employer, but they're B-rated. You ask HR about it. They explain they failed to report a worker's change of address promptly, were placed on an action plan, and are working to be upgraded back to A. They're transparent and can show you their action plan. This might be acceptable risk, especially if you have no better alternatives.
Scenario 4: The Red Flag
You can't find the company on the register at all. When you ask, they say "We're a new company and our licence is being processed." They pressure you to accept the offer quickly. This is a major red flag. Don't proceed without the licence being approved and visible on the register.
Conclusion: The Register as Your First Line of Defense
The UK sponsor register is a powerful tool, but only if you use it correctly. It's not a guarantee of a good employer, but it is a reliable way to verify that a company is legally authorised to sponsor you.
Priya Sharma, from our opening story, avoided a costly mistake because she took the time to verify her potential employer properly. The scammers had created a convincing facade, but they couldn't fake an entry on the official register. Her diligence saved her from potential financial loss and immigration complications.
In the high-stakes world of UK immigration, where a single mistake can derail months or years of planning, the few minutes it takes to properly verify a sponsor on the register is time extraordinarily well spent. Make it your first step, not an afterthought, and you'll significantly reduce your risk of fraud, disappointment, and wasted effort.
The register won't tell you everything you need to know about a potential employer, but it will tell you the most fundamental thing: whether they're legally authorised to sponsor you at all. Start there, and build your due diligence outward from that foundation.