Room at the Top (1959)
Room at the Top is a 1959 British film based on the novel of the same name by John Braine. The novel was adapted by Neil Paterson with uncredited work by Mordecai Richler. It was directed by Jack Clayton and produced by John and James Woolf. The film stars Laurence Harvey, Simone Signoret, Heather Sears, Donald Wolfit, Donald Houston and Hermione Baddeley.
More at Wikipedia.