The register
The register lists Particle TH 2 Ltd in London as a licensed sponsor on Skilled Worker, an entry that goes back to at least 2026. Rating on the current register: Worker (A rating).
Companies House lists it as Particle TH 2 Ltd, number 15227351, incorporated 2023: 3 years of filings behind the name. The registered office is at 101 New Cavendish Street, 1st Floor South, London, W1W 6XH, W1W 6XH. By its SIC codes the business is in property.
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.