Grading universities - The rights and wrongs of the Research Excellence Framework. The REF is the most recent in a series of national assessments of research in British universities. But how reliable and fair are these assessments? Do they give the taxpayer value for money, as is hoped by their advocates? And will they lead to the best and most innovative research in the future? Laurie Taylor asks the questions. He's joined by the former Minister for Higher Education and Conservative MP, David Willets, and by Derek Sayer, Professor of History at the University of Lancaster and author of a recent book which argues that the REF isn't fit for purpose.

Also, living apart together. Sasha Roseneil, co-author of a Europe wide study, examines why a growing number of couples choose to live separately.

Producer: Torquil Macleod.