Watching Haunted London Underground.
LOL... I'm sorry but seriously? 'It gets cold down here'. Fur realz? Dude, if UK weather is akin to NZ weather, as they say it is, then it's cold ALL.THE.BLOODY.TIME.
Plus, logically, the deeper you go, the colder it gets. Whoop, there's a draft. So? That's a pretty long tunnel, I'm sure there's a draft creeping in
somewhere.