Picket Line

Junior Doctors Stage 24 Hour Strike Across NHS In England...LONDON, UNITED KINGDOM - JANUARY 12:  A junior doctor carries a placard as she walks to join a picket outside Kings College Hospital on January 12, 2016 in London, United Kingdom. Junior doctors in England have gone on strike in a dispute with the government over a new contract. The doctors are only providing emergency cover during the 24-hour walkout, which started at 8:00am with the NHS so far postponing 4,000 routine treatments.  (Photo by Carl Court/Getty Images)

Carl Court/Getty

A junior doctor carries a placard as she walks to join a picket outside Kings College Hospital in London. Junior doctors in England have gone on strike in a dispute with the government over a new contract 

A fireman with his dog on the picket line at Euston London Fire Brigade station house, London as firefighters and Fire Service staff across England and Wales walked out on strike today in a bitter row over pensions, with the threat of further action if the dispute is not resolved. PRESS ASSOCIATION Photo. Picture date: Wednesday September 25, 2013. Members of the Fire Brigades Union (FBU) left their stations and set up picket lines, leaving brigades to put into place contingency plans. See PA story INDUSTRY Fire.

Jonathan Brad/PA

A fireman with his dog on the picket line at Euston London Fire Brigade station house in London. Firefighters and Fire Service staff across England and Wales striked on Wednesday over pensions, with the threat of further action if the dispute is not resolved.