The register
The register no longer lists ClickZ Media Limited in London; its last appearance was 23 October 2026. That is not a mark against it: licences lapse, names change, businesses merge. The register records its rating as Worker (A rating).
Companies House lists it as Clickz Media Limited, number 08275348, incorporated 2012: 14 years of filings behind the name. Registered office: Scale Space, 58 Wood Lane, London, W12 7RZ, W12 7RZ. Its filed activity puts it in professional and technical services. It has traded under other names before, including Contentive Ltd.
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.