Junior doctors have began a four-day strike as part of their ongoing dispute with the Government over pay.
The walkout by members of the British Medical Association (BMA) is expected to cause huge disruption to the NHS this week, with an estimated 250,000 appointments, including operations, set to be cancelled.
They are demanding a pay deal which addresses a 26% fall in the real-terms value of their pay since 2008. NHS managers have warned that patient care is "on a knife edge" because of the strike.