The Apprentice’s Nick Hewer says he hates working the long hours following the show’s candidates round on their tasks.

The 67-year-old advisor to Lord Sugar insists he will keep working on the BBC series as long as it’s still going and he is ‘physically able’, but admits it is hard work.

Nick told Heat magazine: “I hate every minute of it because it’s very hard. We put our businesses and our social lives on hold for weeks and weeks and then spend our days eating sandwiches somewhere in a gutter in Hackney.

“And then we go into the boardroom after a 20-hour day with no script and Lord Sugar, who clearly missed his vocation as a criminal barrister, is in charge.”

But he added: “I love it really. We’re genuinely helping people achieve the most extraordinary things.”

And while Nick may seem a tough critic, he does have sympathy for The Apprentice candidates.

He said: “You ask why contestants make such t**s of themselves? Well, exhaustion leads to mistakes. For last year’s sausage task we started at 7pm, went through the night, through the next day and finished at 11pm. It’s relentless.

“Also, they’re locked up in that house, that sweaty cauldron, with no contact with their families and are constantly worrying who’s creeping up behind them with a bread knife.”