Troubled NHS Tayside has appointed its third chief executive in less than a year.

Grant Archibald, the current chief operating officer of acute services with NHS Greater Glasgow and Clyde, will replace Malcolm Wright in the New Year.

Mr Wright took over the day-to-day running of NHS Tayside on an interim basis after Lesley McLay left the role in April.

Ms McLay stepped down after it emerged charity money had been used to pay for IT equipment at the cash-strapped health board, which has a projected deficit of £18.7m for 2018-19.

After departing NHS Tayside, Mr Wright will then become interim chief executive of NHS Scotland until a permanent successor for Paul Gray, who has announced he will leave in February, is found.

Mr Gray was appointed in 2013 following an open competition.

Health secretary Jeane Freeman said: "Paul Gray has been an excellent chief executive of the NHS in Scotland and director general of Health and Social Care.

"Amongst his many achievements in this role, which was just the most recent in a long and distinguished career in public service, Paul oversaw the integration of health and social care services, which is the most significant change to our health system since the creation of the NHS.

"Paul will remain in post until February, continuing to lead health boards throughout the winter months. I would like to offer him my sincere and personal thanks for his work over the last five years, and my best wishes for the future contribution I know he will make.

"I look forward to working with Malcolm Wright, who brings a wealth of senior management experience to the role.

"I am also pleased to announce the appointment of Grant Archibald as chief executive of NHS Tayside. He also has a strong background with more than 30 years of experience in the health service, including a number of senior roles."