Our Practice Note Applying for a sponsor licence under Workers and Temporary Workers: eligibility and suitability confirms the legal basis for the rules which underpin sponsor licence system as follows: ‘In R (New London College Ltd) v Secretary of State for the Home Department (SSHD); R (West London Vocational Training College) v SSHD [2013] UKSC 51, [2013] 4 All ER 195 the Supreme Court held that the Immigration Act 1971 provides a general statutory authority for the SSHD to administer a sponsor licensing system, including vetting sponsors, via rules which do not require to be laid before Parliament. Only mandatory criteria which relate to a person's qualifying for entry clearance, leave to enter or leave to remain must be laid before Parliament as Immigration Rules’. The rules governing the licensing system are therefore contained in the various sponsor guidance documents issued, and periodically updated, by the Home Office. These include that sponsor must have in