Michael Rosen talks to sociolinguist Louise Mullany about all the ways in which we say sorry. From the sympathetic sorry in the face of bad news, to the polite sorry we say to strangers in the street. Via workplace hierarchies, gender differences, and the nitty-gritty of political apologies.

Louise is a Professor of Sociolinguistics at the University of Nottingham and author of 'The Science of Politeness', due out next year.

Produced for BBC Audio Bristol by Becky Ripley