yes Britannia have a consistently terrible reputation. They own the Grand, and also Pontins
They also own the notoriously bad Adelphi in Liverpool, of 'Just cook will yer!" fly on the wall (and in the soup) documentary 'fame'. It's sad because in it's prime in the early to mid 20th century it was world reknowned as the most luxurious hotel outside London.
On the Pontins front, Holiday On the Buses was filmed at Pontins in Prestatyn (currently rated 2.6 stars on TripAdvisor). The Army personnel who are running the mass Covid-19 testing programme in Liverpool at the moment are being put up at Pontins in Ainsdale, which is better than a tent I suppose, but not by much.