In this situation, if the existing students don’t have ano5e Roberson to replace the leaving student, the students (either the one leaving or probably the ones remaining) should approach the LL or agent and suggests a mutual surrender. This means the LL agrees to stop the tenancy before it begins. They will lose their deposits. The reason LLs might agree to this, if if you point out that otherwise, the remaining students will give notice after the first day of the tenancy and the LL will be left with an empty property after the 2 months notice, mid academic year. This is harder to re-let than now.
A better alternative is to find another student. The onus does become on the remaining students rather than the leaving student, which seems unfair, but that’s the nature of the new law. They can then ask for a change of one tenant or again for a mutual surrender and an immediate new contract with the new person named as the last tenant.
It is better to act now or as soon as this happens if it’s earlier in year. LLs can re-let if there is more time and are more likely to agree mutual surrender. They are likely to listen to suggestions as they don’t want students to give notice at the start of contract, as they now can from day 1 of tenancy. Note, you can’t give notice before it starts.
Good communication with the person leaving is key. Agree with them if they are prepared to contribute anything to lost deposit. Unfortunately, they will all lose their deposits if the tenancy is mutually surrendered. So the least costly option is to find a replacement student.
It’s pretty crap. It’s always been crap, but much of the burden of someone dropping out has now moved onto the remaining students, from the leaving one, which is where it mostly lay before.