Undergraduate Admissions Handbook 2013-14
2.9 Applicants who have already studied at the University of Cambridge
Regulation 2 of the Regulations for Honours Examinations (Statutes and Ordinances) clearly states:
"No one who is, or is qualified to be, a member of Senate, or is, or has been, registered as a graduate student shall be a candidate for Honours in any Honours examination."
In practice, this means that any student who has completed a BA with Honours at the University or who has studied as a postgraduate student at the University and who then applies successfully for admission as an undergraduate cannot be a candidate for Honours in any Honours examination. In order to avoid subsequent disappointment or disputes, it is undoubtedly best to make this constraint absolutely clear to any applicant to whom this applies before inviting them to interview, and certainly before offering them admission.