Holborn was the second Hox to join the fam, taking over a Grade II-listed building that was once the factory of George Kent, a famed maker of gadgets and instruments (among them a knife sharpener/cleaner now sitting in the Science Museum, no less). After Kent, BT moved in, and now this former telephone exchange is home to 230 bedrooms (expanding from the original 174) and the Apartment, plus our f ADZN1_UKCT