Universities are free to set their own entry requirements. Some universities, such as Oxford, Cambridge and some courses at Imperial only admit students to study for the MEng degree. (Their courses usually allow a student to leave with a bachelor's degree after three years. More information on which courses are accredited by the Engineering Council for registration as a Chartered Engineer or Incorporated Engineer can be found at https://www.engc.org.uk/education-skills/accreditation-of-higher-education-programmes/) Other universities, such as the University of Greenwich, University of Surrey, Coventry University, Brunel University and Swansea University, admit students to read for BEng Honours and MEng courses and allow students to change between the two during the early years of the course. The Open University offers the MEng degree as a postgraduate qualification but requires students to complete its course within four years of completing a BEng Honours degree.