The register
The register lists Diorama Arts Centre in London as a licensed sponsor on Charity Worker, an entry that goes back to at least 2026. The register records its rating as Temporary Worker (A rating).
At Companies House the business is Diorama Arts Centre (company number 01585918), a company limited by guarantee incorporated in 1981, 45 years ago. Registered office: 201 Drummond Street, London, NW1 3FE, NW1 3FE. By its SIC codes the business is in arts, sport and leisure. It has traded under other names before, including Diorama Arts Centre 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.