Changes in a person’s circumstances which occur after the grant of entry clearance or permission: • may lead to the cancellation or curtailment of their stay in the UK if they have limited permission to enter or stay, and • often need to be reported to the Home Office Of course, reporting such a material change of circumstances to the Home Office can trigger cancellation or curtailment. This Practice Note looks at both of these issues. The removal of a person’s permission is termed: • cancellation, where this occurs at the port of entry or where a person is outside the UK, or • curtailment, where they are already in the UK From 1 December 2020, the Immigration Rules, Part 9 no longer refers to curtailment, but to cancellation throughout. Cancellation has been redefined for the purposes of the Rules as meaning: ‘…cancellation, variation in duration, or curtailment, of entry clearance or permission, which