Rupert Everett

Film Deaths

Dance with a Stranger (1985) [David Blakeley]: Shot in the stomach and chest by Miranda Richardson in the street at night.

The Comfort of Strangers (1990) [Colin]: Throat slit by Christopher Walken and Helen Mirren, while Natasha Richardson looks on helplessly. (Thanks to Sheena)

B. Monkey (1998) [Paul Neville]: Shot repeatedly by his lover (Jonathan Rhys Meyers) as Asia Argento and Jared Harris looks on in shock.

Shakespeare in Love (1998) [Christopher 'Kit' Marlowe]: Stabbed in the eye (off-screen) during a bar brawl. We only hear other characters discussing his death afterwards; his body is not shown.

To Kill a King (2003) [King Charles I]: Executed by beheading, on Tim Roth's orders. (Thanks to Pam)

The Chronicles of Narnia: The Lion, the Witch, and the Wardrobe (2005) [Fox]: Providing the voice of a CGI fox, he is turned to stone by Tilda Swinton, while Skandar Keynes looks on in horror. He is later restored to life by "Aslan" (voiced by Liam Neeson) (Thanks to ND)

Shrek the Third (2007; animated) [Prince Charming]: Possibly crushed to death by a prop "tower" when the dragon knocks it over onto him on the stage with her tail. (I'm not certain whether this was supposed to be fatal, but I'm listing it just in case.) (Thanks to Eric)

Stardust (2007) [Secundus]: Pushed out of the tower window by his brother (Mark Strong), as his dying father (Peter O'Toole) looks on; he appears as a ghost throughout the rest of the movie.

Wild Target (2010) [Ferguson]: Dies of his injuries sustained in a car crash.
Miss Peregrine's Home for Peculiar Children (2016) [Orinthologist]: Playing one of the forms of Samuel L. Jackson's shapeshifter character, he is presumably killed when Samuel is eaten by one of the Hollows.
The Happy Prince (2018) [Oscar Wilde]: Dies of Meningitis or Syphillis, with Colin Firth and Edwin Thomas by his side. (Whether Wilde died of syphillis in reality is debated historically, but this film implies that it is with the ghostly appearance of Rupert's wife (Emily Watson).)

Dangerous Liaisons (2003 mini-series) [Vicomte Sébastien de Valmont]: Commits suicide by jumping off a cliff while on horseback.
The Musketeers: Death Of A Hero (2016) [Phillippe Achille, Marquis de Feron]: Stabbed in the stomach by Matthew McNulty after he tells him he would rather betray him than the King.(Thanks to Brian)