The register
The register lists Packt Publishing Ltd in Birmingham, West midlands 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 Packt Publishing Limited, number 04759694, incorporated 2003: 23 years of filings behind the name. The registered office is at Grosvenor House, 11 St. Pauls Square, Birmingham, B3 1RB, B3 1RB. 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 Packt Publishing Ltd's own careers page and the job boards, and the answer changes with the season and the order book.