The register
The register lists ERSG Limited in Bromley 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 Ersg Ltd, number 06605364, incorporated 2008: 18 years of filings behind the name. The registered office is at 8th Floor, North Tower, 26, Elmfield Road, Bromley, BR1 1WA, BR1 1WA. By its SIC codes the business is in recruitment and employment agencies. It has traded under other names before, including The Environmental Recruitment Solutions Group Limited.
What the licence tells a candidate is that the door is not locked. Whether it is open this month is a question for ERSG Limited's own careers page and the job boards, and the answer changes with the season and the order book.