The register
The register no longer lists Knav Limited in Harrow; its last appearance was 23 October 2026. That is not a mark against it: licences lapse, names change, businesses merge. Its rating on the register is Worker (A rating).
Companies House lists it as Knav Limited, number 03215471, incorporated 1996: 30 years of filings behind the name. Registered office: Ground Floor Hygeia Building, 66-68 College Road, Harrow, Middlesex, HA1 1BE, HA1 1BE. Its filed activity puts it in professional and technical services. It has traded under other names before, including Expomax 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.