LONDON, ENGLAND - APRIL 27:  Accident and emergency department junior doctor Lisa Wallberg, draws an outline of her hand and 'Hands off our NHS' in chalk on the pavement outside King's College hospital on April 27, 2016 in London, England. Junior doctors will walk out from 8am to 10pm on Tuesday and Wednesday this week. They will stop providing emergency care for the first time in the ongoing dispute with the Government over the forced imposition of new contracts. Medical Leaders have called on the Prime Minister to intervene in the dispute to bring both sides back to the negotiating table.  (Photo by Chris Ratcliffe/Getty Images)