LONDON, United Kingdom (AP) — Patients faced cancelled treatments after thousands of British doctors walked off the job on Wednesday, the start of a six-day strike over pay that was set to be the longest in the history of the State-funded National Health Service (NHS).

Managers said tens of thousands of appointments and operations will be postponed because of the walkout across England by junior doctors, those in the first years of their careers. The doctors, who form the backbone of hospital and clinic care, plan to stay off the job until 7:00 am next Tuesday.

Senior doctors and other medics have been drafted to cover for emergency services, critical care and maternity services.

Julian Hartley, chief executive of heath care managers’ organisation NHS Providers, said the strike came at one of the toughest times of the year for the health service, “immediately after the Christmas and new year period because of the pressures the demands, and of course we’ve got flu, we’ve got COVID. So there’s going to be an impact on patients that will be significant”.

Britain has endured a year of rolling strikes across the health sector as staff sought pay rises to offset the soaring cost of living. Unions say wages, especially in the public sector, have fallen in real terms over the past decade, and double-digit inflation in late 2022 and early 2023, fuelled by sharply rising food and energy prices, left many workers struggling to pay bills.

The union says newly qualified doctors earn 15.53 pounds ($19.37) an hour — the UK’s minimum wage is just over 10 pounds an hour — though salaries rise rapidly after the first year.

On a picket line outside St Thomas’ Hospital in central London, 28-year-old Dr Georgia Blackwell said stress and low pay were driving many doctors to take jobs overseas.

“A lot of doctors are moving to Australia — not just because of the pay, but also the work-life balance is better,” she said.

The walkouts have strained the already stretched health service still struggling to recover from backlogs created by the coronavirus pandemic.

Health Secretary Victoria Atkins said the strikes were having “a serious impact on patients,” with more than 1.2 million appointments rescheduled in the months since the wave of industrial action began.

The impact is difficult to quantify. Some claim that delays in testing and treatment due to the strikes may lie behind an increase in excess deaths in the UK, which were at their highest in 2023 since the pandemic year of 2020.

There is little firm evidence of a link, however, with factors including COVID-19 and an aging population contributing to an increase in deaths in the UK and other countries.

Nurses, ambulance crews and senior doctors have reached pay deals with the Government, but the union representing junior doctors has held out, and negotiations broke down late last year. The Government says it won’t hold further talks unless doctors call off the strike, while the medics’ union, the British Medical Association, says it won’t negotiate unless it receives a “credible” pay offer.

The Government gave the doctors an 8.8 per cent pay raise last year, but the union says it is not enough because junior doctors’ pay has been cut by more than a quarter since 2008.