The register
The register lists AT Dent Limited in Boston 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).
At Companies House the business is At Dent Limited (company number 07044804), a private limited company incorporated in 2009, 17 years ago. The registered office is at 1b Saundergate Lane, Boston, Lincolnshire, PE21 7BX, PE21 7BX. Its filed activity puts it in health care.
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.