Junior doctors are set to take part in the second day of the all-out strike in the row over contracts.
More than 20,000 junior doctors are thought to have been on strike yesterday as the Health Secretary admitted this was likely to be his "last big job in politics".
The strike is planned to take place between 8am and 5pm on Wednesday.
Health secretary has denied stopping strike action by junior doctors is "in his hands", accusing the British Medical Association of trying to "blackmail" the government.
Jeremy Hunt asked on BBC Breakfast: "Is it proportionate, or appropriate to withdraw emergency care?"
The Health Secretary said: "It was the first page of our manifesto that we'd have a seven-day NHS.
"I don't think any union has the right to blackmail the Government, to force the Government to abandon a manifesto promise that the British people have voted on."
As junior doctors walked out for a second day, how did hospitals cope? And will the strike action make any difference?
Labour leader Jeremy Corbyn was roundly cheered after joining thousands of junior doctors marching through Whitehall.
A baker has been handing out pasties to junior doctors at Truro Hospital in Cornwall, saying both his children owe their lives to the NHS.