I doubt it, as with dd's she had to sign up for a year and pay in advance. I've looked at the tenancy agreement for details of ending the tenancy early, and it just says 'only if you arrange for another student to take over the remainder of the year'.
Obviously there's no clause about pandemics! However, if all the students have left because uni's closed, and they don't go back again this academic year, does anyone know if there's a chance of a refund?