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Certificate of Sponsorship

A UK reference number issued by a licensed sponsor to a worker, confirming the job details needed for a sponsored work visa application.

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Also known as:CoS

Definition

A UK reference number issued by a licensed sponsor to a worker, confirming the job details needed for a sponsored work visa application.

The certificate is an electronic record, not a physical document. The employer must hold a valid sponsor licence, and the job and salary must meet the route's rules at the time of application.

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Frequently asked questions

Where can I see this term in practice?

Follow the related programme and guide links on this page to see how the term applies to live programmes.

Who can explain how this applies to me?

An adviser can explain how the term affects your application. Book a consultation or send us a message.

What is investment migration?

Investment migration is the legal process of obtaining citizenship or residency in a foreign country through a qualifying financial contribution — such as a government fund donation, real estate purchase, or business investment. Programmes are offered by sovereign governments and are fully legal, internationally recognised, and increasingly common among UHNW and HNW individuals and families.

What is the difference between residency and citizenship by investment?

Residence by investment gives you the right to live in a country; citizenship by investment makes you a national with a passport and full civic rights.

Residence permits usually need renewing and may carry stay requirements, while citizenship is generally permanent. Many families combine the two to cover different needs.

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