The register
Sannam S4 Ltd is licensed to sponsor on Global Business Mobility: Senior or Specialist Worker and Skilled Worker. Its entry on the register dates back to at least 2026, and the organisation is based in London. The register records its rating as Worker (A rating).
Companies House lists it as Sannam S4 Limited, number 09002645, incorporated 2014: 12 years of filings behind the name. The registered office is at 6th Floor 2 London Wall Place, London, EC2Y 5AU, EC2Y 5AU. By its SIC codes the business is in business services. It has traded under other names before, including Sannam S4 UK Limited.
A licence says an organisation may sponsor; it does not say it is hiring today. The way to find out is the same as for any employer: the careers page, the job boards, and a direct approach with a UK-style CV that says early that sponsorship would be needed.