The City of No (1971)

Two men's friendship has been weakened by their contrasting approaches to life. Bob (Jeremy Stephens) has left his wife to paint pictures of a lover (Shirley Gruar) who is much younger than him. Lawyer Graham (Bill Johnson, who later played Mr Wilberforce in Under the Mountain) is the voice of reason, trying to convince Bob to quit his bohemian lifestyle. But is Graham really acting in his mate's best interests?