The chief executive has imposed a rigid discipline on a business with 55 factories and more than 8,000 staff, churning out 62bn cans a year.

Each book was delivered before its deadline, according to the rigid discipline she imposed on every aspect of her life.

This requires rigid discipline and single-mindedness.

Disliking the rigid discipline enforced at the preparatory school, he ran away.

He believed pilots could not be successfully handled with rigid discipline, as what made for a good pilot was an independence that inflexible discipline destroyed.