I share a house with three other people, and as I was the first to move in, I had to sign up for some of the bills with my name. However, some of my co-tenants are rather slow and unwilling to pay their share on time, and I'm getting worried that I might be taken for the proverbial ride, especially when university terms finish and some of them might leave before our tenancy contract is finished (it is until the end of summer, so they'd be forced to pay the rent, but I would have no way to make them pay the bills).
I had an idea of printing out some forms stating that the people who sign it would thereby agree to pay the bill in full (specifically internet bills, where whether you use it or not the price stays the same). Would this be of any help in court? I hope it won't come to this but I want to have some sort of backup plan if things go awry.