The Nappy Lady, a British retailer that sells cloth diapers, has seen its business take off as supplies of disposable diapers run low in the U.K. “I have been working 15-18 hour days,” said Wendy Richards, managing director of the company. “I hate having a mother at the end of the phone and can’t help them.” The Nappy Lady has seen its daily sales revenue triple with the outbreak of the coronavirus in England.