Nearly 3,000 operations have been cancelled as junior doctors in England take part in a second 24-hour strike over pay and conditions.

Check-ups, appointments and tests are also set to be disrupted as a result of the walkout, which began at 08:00 GMT.

Formal talks broke down in January and there is mounting speculation ministers may soon seek to impose a new contract, potentially inflaming the row further.

The key sticking point appears to be payments for working on Saturdays.