The register
The register lists Mushroom Technologies Ltd in Rainham, Essex as a licensed sponsor on Skilled Worker, an entry that goes back to at least 2026. The register records its rating as Worker (A rating).
Companies House lists it as Mushroom Technologies Limited, number 10481445, incorporated 2016: 9 years of filings behind the name. Registered office: Ceme Innovation Centre, Marsh Way, Rainham, RM13 8EU, RM13 8EU. Its filed activity puts it in it, software and media.
Holding a licence is the expensive, slow part done. For Mushroom Technologies Ltd the question each time is only whether the role and the pay fit the current rules, and that is checked per vacancy.