Hotel Splendide, 25 Mornington Crescent, Borough of Camden, London NW1, 2003 • You couldn’t make this up. But in fact it was made up, because according to the Shady Old Lady blog this is an old film prop sign from at least the 1950s, although the sign was in one piece then. There’s a letter about it here, and there’s a 1994 painting of in in the Government Art Collection here. There was still a bit left in 2008 but it had totally gone by 2015.
Shopfront Elegy 
Used to live here about 12 years ago. It was all flats run by a slum lord. Half of the Hotel Splendide sign was just sitting on the stairs between the ground and first floor. The frontage was used in the Last remake of Brighton Rock too.
Superb info – thanks for sharing!
The dates aren’t correct. It was between 1987 and 1990 as I was living in Albert street at the time. Came home from work and there were policemen in Mornington Crescent. They were actors from the film set. The sign had been made to look old, obviously.
The sign was put up for the 1988 movie “Just Ask for Diamond” (https://www.imdb.com/title/tt0095419)
Thanks for the info!