Tony Richardson's movie is worth viewing both by lovers and disparagers of the play … complementary, sometimes contrasting. It can be seen in its entirety (with Portuguese subtitles for the hearing impaired) on YouTube (Robert's "package" arriving at 16:53).
P.S. For "Variation on a Theme," the play "Honey" was written to rebut, check out the "Latest News…" on the Terence Rattigan homepage.
Feelings can’t sometimes be helped, but the expression of them can.