To hire foreign nationals/migrants, a U.K. business must hold a Sponsor License. The purpose of this license is to verify that the business is trading and has a genuine need to sponsor a worker. The documentation for this application will vary depending on circumstances. Once issued a Sponsor License is valid for 4 years and must be renewed. For a small organisation the Home Office currently charges £536, and £1,476 for a large organisation. It takes around 8 weeks for Home Office to process the application. Once a company recives their Sponsor License, they can issue a Certificate of Sponsorship for a foreign worker which allows them to apply for a Skilled Worker Visa.