The register
The register lists Sigma Software Holding Ltd in London 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 Sigma Software Holding Ltd, number 15631718, incorporated 2024: 2 years of filings behind the name. Registered office: 41 Devonshire Street, Ground Floor, London, W1G 7AJ, W1G 7AJ. Its filed activity puts it in it, software and media.
What the licence tells a candidate is that the door is not locked. Whether it is open this month is a question for Sigma Software Holding Ltd's own careers page and the job boards, and the answer changes with the season and the order book.