1. PBSA vs. Private HMOs
PBSA (University Halls or Private Student Blocks): Generally exempt from the new rolling tenancy rules. If you sign a contract here, it remains a fixed-term contract for the academic year. You cannot easily give two months' notice unless you find a replacement.
Private Student HMOs (Shared Houses): Renting a standard house with friends means you are in an HMO. Under the new laws, these function as rolling periodic tenancies, meaning you can technically give two months' notice to leave.