Dr Nick Carr has multiple choices when nominating his proudest achievement, from pushing to ban temazepam gel capsules, his court fight against the Federal Government or the sleep program he published for infants aged 6-18 months.

But Dr Carr, 69, picks his choice to work four days a week — a decision he made so he never neglected his wife Sarah, whom he met in the NHS, or his children, Simon, Isabelle and Olivia.

He said many NHS doctors had miserable family lives.

“When my son was born, in 1989, I took a day off in the middle of the week to be with him.”