This is one of the better “quiet” movies, as I call them, that I have watched in a long time. Bill Nighy seems to excel in restrained roles, where he speaks quietly and shows emotion subtly. I am thinking especially of The Girl in the Cafe, where he oddly enough also plays a civil servant.
Nighy is wonderful and methodical (in a good way) as a man who is thawing out from a repetitious, paralyzed life after he receives life-altering news. He even impresses when he sings a song in the same quiet, restrained manner.
A flashback is applied in an odd way nearer the end of the movie, but it works as an imaginative way to fill in the details of the ending.
I fully expect to watch this again.