Demonstrators hold placards as they protest during a Junior Doctors' strike outside St Thomas' Hospital in central London on April 6, 2016, against proposed new conditions and pay rates for working unsociable hours.
Thousands of operations and procedures across England have been cancelled as a result of the 48 hour strike which began Wednesday morning. / AFP / JUSTIN TALLIS        (Photo credit should read JUSTIN TALLIS/AFP/Getty Images)