The writer of one of Tim Pigott-Smith's final pieces of work has said he is proud people will be able to see the late actor's "amazing performance".
Pigott-Smith had already filmed the forthcoming BBC2 drama King Charles III having successfully played the title role in the theatre production on Broadway and in the West End.
Ahead of the programme's airing next week, the cast and crew have spoken about the shock death of the actor last month, with writer Mike Bartlett saying they were "still all in shock".
He told the Radio Times: "But at least we finished it and people will be able to see that amazing performance."
Oliver Chris, who stars as Prince William, said: "Tim and I were very close, and the only thing I can hold onto is the preservation of joyous memories and the whole of King Charles III reflects that."
Rupert Goold, who directed both the theatre and television version told the magazine: "What struck me is how Tim adjusted his performance from being quick and vigorous on stage to still and reflective on screen."
"And Tim has natural kingly authority. When we were editing, there were profile shots you really thought should be on a coin."
In King Charles III the actor plays Charles, now monarch after the Queen's death, who refuses to sign a controversial bill into law.
The drama chronicles the political chaos that follows, leading to a constitutional crisis, rioting on the streets and a tank in front of Buckingham Palace.
Pigott-Smith died on April 7 aged 70, a month after collecting an OBE for services to drama.
:: This week's Radio Times is out now.