Avoid Losing £10,000+ to Fake UK
Sponsorship Scams
CoreFlux™ analyzes your Certificate of Sponsorship against live UKVI data, Companies House, and 14+ forensic signals — detecting fraud risk in under 60 seconds.
through
GOV.UK
UKVI Sponsor Register
Companies House
Company verification
SOC Database
Salary & code validation
All structural, register and metadata checks passed. No fraud signals detected.
What we check
25+ authenticity signals.
Results in 60 seconds.
Our AI cross-references your CoS against official UKVI data, Companies House, SOC code tables, salary thresholds, and runs visual forensics — simultaneously.
UKVI Sponsor Register
Checks if the employer is licensed to sponsor workers
Salary Threshold
Verifies salary meets the current £41,700 minimum
SOC Code Validity
Confirms the occupation code is eligible for Skilled Worker route
Visual AI Forensics
Detects font inconsistencies, metadata anomalies, and edits
Companies House
Confirms employer exists and is actively registered
Verification Result
This Certificate of
Sponsorship is Genuine!
Document Verified: This CoS document is authentic, and all essential details align perfectly with the official UK records.
Reasons
- Valid Sponsorship Number
- Registered Sponsor
- Correct Personal Details
- Official Template Used
cos-12456.pdf
Analysed · Deleted immediately
✓ Genuine document
As covered in
Real UK fraud cases
This happens every week.
These are real people.
Lost to fraud
£22,000
Care Worker · Birmingham
Transferred money to employer before visa. Company not on UKVI register. Visa refused. Money never returned.
Lost to fraud
£18,500
Software Engineer · London
Paid a recruitment agency "visa processing fees" over 3 months. CoS reference was fabricated. Never had a job.
Lost to fraud
£9,000
Nurse · Manchester
Fake NHS trust issued a forged CoS. Employer name was real, but the sponsor licence had expired 2 years prior.
Source: Action Fraud UK, BBC News, The Guardian. Cases anonymised. One free check. 60 seconds. Could save you everything.
Verified reviews
Trusted by migrants & professionals across the UK
200+ reviews
"SponsorShield flagged my employer wasn't on the UKVI register. I was about to send £3,000. It saved everything."
Priya S.
Care Worker, Birmingham
"The PDF metadata check caught something no human would notice. Turned out the CoS was created in Canva. Reported it immediately."
Olumide A.
IT Engineer, London
"My immigration adviser told me to use SponsorShield before she submits anything. Result came back clear in 54 seconds. Total peace of mind."
Maria S.
Registered Nurse, Manchester
"I run every client CoS through this before filing. The salary threshold and SOC checks alone caught 3 suspicious docs this month."
Tariq A.
OISC Immigration Consultant
"A friend at my mosque lost £18,000 to a fake CoS last year. I ran mine and it came back clear. Worth every second."
Fatima H.
Social Worker, Leeds
"SponsorShield flagged my employer wasn't on the UKVI register. I was about to send £3,000. It saved everything."
Priya S.
Care Worker, Birmingham
"The PDF metadata check caught something no human would notice. Turned out the CoS was created in Canva. Reported it immediately."
Olumide A.
IT Engineer, London
"My immigration adviser told me to use SponsorShield before she submits anything. Result came back clear in 54 seconds. Total peace of mind."
Maria S.
Registered Nurse, Manchester
"I run every client CoS through this before filing. The salary threshold and SOC checks alone caught 3 suspicious docs this month."
Tariq A.
OISC Immigration Consultant
"A friend at my mosque lost £18,000 to a fake CoS last year. I ran mine and it came back clear. Worth every second."
Fatima H.
Social Worker, Leeds
"Companies House + UKVI check both passed. I proceeded with full confidence. Exactly what I needed before investing in my visa."
Emmanuel O.
Skilled Worker Visa Holder
"Took under a minute. The verdict was clear with a full breakdown. Shared it with my immigration lawyer who was impressed."
Ravi K.
Software Developer, Birmingham
"The visual AI forensics found a font inconsistency I would never have spotted. Dodged what could have been a disaster."
Amara N.
Healthcare Assistant, Bristol
"Simple, fast, and genuinely reassuring. The fact that my document is deleted immediately after made me feel safe uploading it."
James K.
Accountant, Leeds
"My clients trust me more because I use SponsorShield. It adds a professional layer of verification I can show them in writing."
Sunita D.
Immigration Adviser, Manchester
"Companies House + UKVI check both passed. I proceeded with full confidence. Exactly what I needed before investing in my visa."
Emmanuel O.
Skilled Worker Visa Holder
"Took under a minute. The verdict was clear with a full breakdown. Shared it with my immigration lawyer who was impressed."
Ravi K.
Software Developer, Birmingham
"The visual AI forensics found a font inconsistency I would never have spotted. Dodged what could have been a disaster."
Amara N.
Healthcare Assistant, Bristol
"Simple, fast, and genuinely reassuring. The fact that my document is deleted immediately after made me feel safe uploading it."
James K.
Accountant, Leeds
"My clients trust me more because I use SponsorShield. It adds a professional layer of verification I can show them in writing."
Sunita D.
Immigration Adviser, Manchester
Know the risk
Real stories. Real consequences.
"I sold my family's land to pay for a UK visa that never existed"
A care worker from Ghana paid £22,000 in stages to a man posing as an NHS trust recruiter. The Certificate of Sponsorship was forged. The employer was not on the UKVI register. She had no idea until she landed at Heathrow.
The anatomy of a fake CoS: how fraudsters make them look real
Fake CoS documents have become sophisticated. Scammers register shell companies on Companies House (which is easy and free), then issue forged sponsorship documents with real-looking reference numbers — but the company is never added to the UKVI sponsor register.
7 things every migrant must verify before trusting a Certificate of Sponsorship
The UKVI sponsor register is public. The CoS reference number has a specific 11-character format. The salary must meet a minimum threshold. Most fraud victims would have been protected if they knew to check even one of these. Here's the full list.
You now know what fraud looks like.
Run a free check on your CoS before you take another step.
How it works
Upload. Analyse. Know your risk.
Three steps. Under 60 seconds. No account. No guesswork.
01
Upload your CoS PDF
Drag and drop your document. No account required. Processed entirely in memory — never written to disk or stored.
02
CoreFlux™ runs 14+ checks
UKVI sponsor register, Companies House, PDF forensics, metadata analysis, SOC salary validation, and tamper detection — simultaneously.
03
Receive your risk verdict
LOW / MEDIUM / HIGH RISK in under 60 seconds. Full forensic breakdown with the paid report. Report sent to your email.
⚠ How CoS scams work
This happens every week in the UK.
Thousands of migrants lose life savings to CoS fraud each year. Here is exactly how the scam works.
Step 1
Fake job offer via WhatsApp or email
Scammers pose as UK employers on job boards, WhatsApp groups, or LinkedIn. They send convincing job offers with salary details and a "confirmed" visa sponsorship.
Step 2
You receive a forged CoS document
A fake Certificate of Sponsorship is sent — often created in Photoshop, Word, or Canva. It looks official. The company name may even be real, but the sponsor licence is fake or expired.
Step 3
You pay. The job disappears.
Visa fees, "processing costs", or deposits are requested — sometimes £5,000–£25,000. Once paid, the scammer vanishes. UK Home Office rejects the application. Money is never returned.
Don't be the next case.
CoreFlux™ fraud risk scan takes 60 seconds and could save you thousands.
Pricing
Start free.
Upgrade if you need more.
No credit card. No account. Your first check is always free.
Free
- Risk verdict: Low / Medium / High Risk
- UKVI Sponsor Register check
- Companies House status check
- Number of fraud indicators shown
- Document deleted immediately
Full Report
- Everything in Free
- Full breakdown of all 14+ signals
- Confidence score per check
- Exactly what failed — and why
- PDF forensic metadata analysis
- Report sent to your email
Immigration consultant or adviser?
Professional plan at £49/month — unlimited checks, bulk upload, CSV export, priority support.
FAQ
Common questions
Everything you need to know about CoS verification.