HAHA Sonofasailor, don't worry. I can't afford UGGS and I've never been a fan anyway

Thanks Albatross, KFdancer, and Jimbocz! Yeah, it's storage bricks that release the heat. The two knobs apparently control the intake and output of heat. I've also heard they don't work well and are expensive, which is why I'm excited that heat is included in my rent, haha!
Ok, another question: other than my measuring cups/spoons, are there any other kitchen utensils I might as well pack rather than buy? I'm already planning a trip to Tesco and Ikea. My flat is also above a secondhand shop, so we'll be going there as well!