Check if Your UK Certificate of Sponsorship is Genuine
Receiving a UK Certificate of Sponsorship (CoS) is a critical step in your visa application journey. Our AI-powered verification tool helps workers and employers quickly check whether a CoS document is authentic, protecting you from scams and visa refusals.
Check Your Certificate of Sponsorship NowWhat is a Certificate of Sponsorship?
A Certificate of Sponsorship is an electronic record, not a physical document, issued by UK employers through the UK Visa & Immigration Sponsorship Management System (SMS). It contains a unique reference number and details about your job and sponsor.
The CoS is essential for applying for UK work visas, including Skilled Worker visas and other sponsored work routes. Legitimate sponsors receive their CoS reference via the official Home Office system.
Risks of Fake or Invalid Certificates of Sponsorship
Unfortunately, visa scams involving fraudulent CoS documents are increasingly common. The consequences of using a fake or invalid Certificate of Sponsorship include:
- Visa refusal: Your visa application will be rejected if the Home Office cannot verify your CoS
- Financial loss: You may lose visa application fees, healthcare surcharges, and any payments made to fraudulent agents
- Immigration consequences: Submitting false documents can lead to bans from the UK
- Job offer scams: Fake sponsors often demand upfront fees for non-existent positions
- Identity theft: Scammers may collect your personal information for fraudulent purposes
How Our AI Verification Tool Checks Your CoS
Our artificial intelligence system analyzes your Certificate of Sponsorship document using multiple verification methods:
- Upload your document: Submit your CoS document or enter your CoS reference number
- AI pattern analysis: Our system examines document metadata, formatting, and structural patterns typical of genuine UK government documents
- Suspicious element detection: The AI flags inconsistencies in sponsor license numbers, date formats, job titles, and official Home Office formatting
- Instant results: Receive a detailed report highlighting any concerns within seconds
While our tool provides a preliminary check, it does not replace official verification through the Home Office or professional immigration advice.
When Should You Use a CoS Checker?
Consider using our verification tool in these situations:
- Your employer or recruitment agent sent you a PDF document instead of an official SMS notification
- The sponsor company is unfamiliar or you cannot find their registration on Companies House
- You were asked to pay fees for the CoS or job placement
- The document contains spelling errors, unusual formatting, or inconsistent information
- You want peace of mind before proceeding with your visa application
- You're an employer checking a CoS you've received from a third party
Frequently Asked Questions
The UK Visas and Immigration website does not provide a public tool for applicants to verify CoS documents. Only licensed sponsors can access the Sponsorship Management System. Our AI tool provides an independent preliminary check.
No. Our tool provides a technical analysis of document authenticity but does not constitute legal or immigration advice. If you have concerns about your CoS, consult a registered immigration advisor or solicitor regulated by the OISC or SRA.
Yes. We use bank-grade encryption to protect all uploaded documents. Your CoS information is analyzed securely and is not shared with third parties. Documents are automatically deleted after verification.
Check the UK government's register of licensed sponsors. Legitimate sponsors must be on this list. Also verify the company exists on Companies House.
Do not proceed with your visa application. Contact your sponsor directly using independently verified contact details (not those provided in the suspicious document). Consider seeking advice from a regulated immigration professional. Report suspected fraud to Action Fraud.
Start Your Free CoS Verification
Upload your Certificate of Sponsorship document and get instant AI-powered authenticity checks. Protect yourself from visa scams and gain confidence in your UK immigration journey.
Check Your Certificate of Sponsorship NowNeed more guidance? Read our detailed guides on how to check if a CoS is genuine, common CoS scams and red flags, or what to do if you think your CoS is fake.