Today Mark Phillips, an acting captain in the British Army, earning around £2,500, married Anne Windsor, a Princess of the British Royal Family, who has an income of around £35,000. Last week Man Alive looked at five families, where the wife had become the-major breadwinner, to discover its effects on the traditional roles of marriage. Good luck, this day, to acting Captain and Mrs Phillips who are just one of thousands of couples who have to face this problem. Tonight Desmond Wilcox examines the implications of this change of roles in a marriage; the implications for the children, for industry and for the society we live in. Among those taking part in the discussion will be the families on film, Marjorie Proops - herself a successful working wife - sociologists, a psychiatrist specialising in marriage, and marriage guidance counsellors.