I work in the ticket offices of the Heathrow group of the Piccadilly Line on't Tube.
Which means I'm not much help to anyone, although I can get you all the Oyster wallets you want, and can resolve journeys on an Oyster card. (Which I'm not supposed to do...) I'd like to say I could help you lot out with future Tube closures etc but I usually can't be arsed to find out what's happening until I get to work on the day of said closures. I do, however, give good customer service, so if you ever want to meet a polite Tube worker, see me. (Unless I'm tired, cranky, not getting any, fed up, already been yelled at by a customer, already been yelled at by management, already been yelled at by my missus, too hot, too cold, or can't be arsed.)