Hello. I'm in a 6 bedroom shared accommodation. I found this house kind of last-minute because my boyfriend at the time and I were supposed to move in together and ended up breaking up. I was joining a friend's house, in which the house was made up of my friend, let's call him B, B's boyfriend, and the rest of B's boyfriend's best mates. So B and I are the two close and the rest are his boyfriend's friends. I was desperate for a house so I agreed to sign. To make this even more complicated, B and his boyfriend broke up. B and I vs B's boyfriend and his mates kind of situation. Well another tenant, let's say G, and his girlfriend are apparently supposed to be splitting rent and living as an illegal tenant. I was quite worried about the legality of all this and how it would impact our overall bills but B told me that she was supposed to buy all the house supplies and that they've done this the year before. We signed this contract in July and now it's February and I can't STAND living with G's girlfriend. For someone who is living here illegally, she is a complete massive ********. She never ever says hello, leaves passive aggressive messages on the white board, touches my things and moves them without permission. We've tried to have a frank chat with her (B and I) but she didn't really speak and gave us death stares. Now, I'm wondering if there's anything I could do, like tell our landlord that we have basically a squatter in the house. B and I feel powerless because she's basically their group of friends. She tries her best to make me and B feel ostracized in the house since its mostly her mates. B is worried that we all might get in trouble since it's a joint tenancy and we've kept this secret for awhile. I want to at least threaten her with this so she can be a decent human being and stop talking **** about us all the time. Will WE get in trouble if we tell the landlord? We've tried to have a sit down chat with her, but didn't work. What is the best way to go about this? I spend most of my time at my partner's now because she hogs the kitchen and living room (does ALL her work there?) and I don't feel comfortable in my own home.