The register
The register lists Nextgen Accountants Limited in Chadwell Heath, Essex as a licensed sponsor on Skilled Worker, an entry that goes back to at least 2026. Its rating on the register is Worker (A rating).
Companies House lists it as Nextgen Accountants Limited, number 07749468, incorporated 2011: 15 years of filings behind the name. The registered office is at Office 5046 321-323 High Road, Chadwell Heath, Essex, RM6 6AX, RM6 6AX. Its filed activity puts it in professional and technical services. It has traded under other names before, including Newgen Accountancy & Tax Consultant Ltd.
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.