Just found one in my room.
And I can bet you there are more. I nearly went mad in the last flat I lived because they were everywhere and I could never get rid of them. Surprisingly my in-laws never seemed to get them despite never hoovering (I am not joking.) Gonna see is Sainsbo's has some sticky traps tomorrow and then I'm gonna get some spray bombs off Amazon. I don't have a lot of things they think are tasty but I'm not risking it and I hate the little buggers. Oh wait, they eat paper, scratch that, I have LOTS of things they think are tasty. Grrrr!