Outspoken Malcolm Walker has shot up the rankings this year. Frozen food retailer Iceland has had another good year in which it recorded year-on-year sales growth of 16 per cent in January.

His strong leadership has also been evident when he reacted quickly during Baugur’s collapse in February, reassuring suppliers about the business’s performance.

Not one to be afraid of controversy, Walker has poked fun at ad executives from London creative agencies and even went as far as to speak up for “retailers’ public enemy number one - the landlord”. He’s a chief executive who does things his own way, and it’s working.