McDonald's workers are staging their first UK strike after walking out at two stores in a dispute over zero-hours contracts and conditions. Some workers at Cambridge and Crayford, south-east London, began the 24-hour action at midnight. A union called it a "brave" move by low-paid staff. The Bakers, Food and Allied Workers Union said staff wanted a wage of at least £10 an hour and more secure jobs. McDonald's said only 14 of the 33 union members balloted had joined in. McDonald's, which employs about 85,000 people in the UK, announced in April that workers would be offered a choice of flexible or fixed contracts with minimum guaranteed hours, saying that 86% had chosen to stay on flexible contracts. And it pointed to a series of pay rises as evidence that it treated its staff well.