Student joint tenancyWatch
Regarding the rent, unless you have the means to get paid back from your housemates, you're stuck. It would take civil proceedings to claw anything back, and trust me that is probably a huge waste of time and money.
I think I know where I stand with this but I honestly can’t believe it. My tenancy has just ended and I sent back my keys 2 weeks in advance which cost me £8 already. The rest of my housemates failed to get their keys back in time, they took another 3 days. The letting agents are now saying I need to pay for 3 days rent (with everyone) for a late checkout. I’m assuming this is why they made it a joint tenancy so they can rob you like this?