McVitie's fury fuels research

A curious missive from McVitie’s details the dos and don’ts of workplace biscuitry.

Dunking digestives during meetings annoys your colleagues, it tells us. Meanwhile, opening someone else’s custard creams is frowned upon, while the worst crime of all is leaving crumbs on someone else’s desk.

Well obviously! But who does these things? The only explanation for this weirdly specific research is that someone at McVitie’s HQ sits next to a crumby, messy-dunking biscuit thief and is delivering an impressively passive-aggressive rebuke through the media. Nice!