(My wedding night at Newcastle Airport Premier Inn turned out to be a taxi ride and a night in Cramlington. Overselling is industry wide)
Unlike Travelodge, the Premier Inn T+Cs don't mention relocation, so unless the terms were different in the past this was a breach of contract (or the Newcastle hotel was on fire).
Missing from the other tale of woe is a phone call to the hotel reception on the night - making sure the staff on duty know is the only way I'd expect to guarantee a room for a late arrival.
(oddly the PI T+Cs explicitly tell you to do this if you plan to arrive after 11 pm, for vague reasons about reception doors being locked)