If you've got a date with the groceries inquiry team at Competition Commission headquarters, don't forget to bring your packed lunch.

One major supermarket chain recently spent a day there getting a grilling - but that was the closest the Commission came to cooking.

Bogof's spies say that come lunchtime one of our most prominent retail chief executives was forced to pop out on to Southampton Row to pick up a sandwich.

But reports that he got it from the Tesco ­Express just 100 metres away from Victoria House remain unconfirmed.