‘The Home Office has issued a new updated version of its policy on section 3C and 3D leave: Leave extended by section 3C (and leave extended by section 3D in transitional cases). Section 3C and 3D leave is an automatic type of leave created by an amendment to the Immigration Act 1971 so that where a person makes a valid application to extend his or her leave to enter or remain and the application is refused, that person’s immigration status would be extended during any waiting time for the application to be decided or for an appeal to be decided.’
Free Movement, 11th April 2016
Source: www.freemovement.org.uk