 The treasury bills had been printed by Waterlows, and the loss of the contract contributed to the closure of Waterlow's operations at Milton Street in Watford.Waterlow's was acquired by Purnell and Sons in 1961, but Purnell sold Waterlow's segment that printed banknotes, postage stamps, traveler's checks, and bonds to De La Rue soon after.In 2003 De La Rue acquired the banknote printing operations of the Bank of England, 75 years after Waterlow's had lost the business.