This analysis covers the main changes to the Immigration Rules (the Rules) set out in HC 667 that are likely to be of most interest to business immigration advisers. HC 667 was issued on 3 November 2016, along with an Explanatory Memorandum (EM).The Statement of Changes was widely anticipated in advance, as the government had announced on 24 March 2016 that it would implement its first tranche of Tier 2 changes in 'Autumn 2016', following its consideration of the Migration Advisory Committee's reports on its review of Tier 2 and partial review of the shortage occupation list: Review of nursing. HC 667 implements these changes to Tier 2, together with a raft of technical changes in numerous categories, including significant changes to the Rules on validity of applications for leave to remain, overstaying and evidential flexibility in Points-Based System (PBS) applications. Also, a new A2 English language requirement being introduced from 1 May 2017 for those who, having been granted an initial period of leave to enter or remain as a partner or