Casualty actor Tom Chambers has defended his co-star Derek Thompson after he was revealed as the BBC’s best paid actor.

Thompson, who has played Charlie Fairhead in the BBC One medical drama since its inception in 1986, earns between £350,000-£399,999.

His salary was revealed after the BBC were forced to publish the wages of any on-air talent earning more than £150,000.

Casualty star Derek Thompson (BBC/Adrian Heap)Casualty star Derek Thompson (BBC/Adrian Heap)

Chambers, who portrays Sam Strachan in the long-running medical series, said Thompson’s commitment to the show meant he had earned his salary.

Speaking at the launch of his former Strictly Come Dancing partner Camilla Sacre-Dallerup’s self-help book, he told The Sun: “It’s like being a footballer — you earn your credits. I’ve just done six months on Casualty, but Derek has done 31 years of service.

“That means arriving in the dark at 6am and leaving when it’s dark at 9pm.

“It’s demanding stuff.

“Likewise, Chris Evans has been a household name for 20 years and his Radio 2 figures are outstanding.”

Teletubbies 20th anniversary party – LondonTom Chambers (Jonathan Brady/PA)

The actor also addressed the BBC’s gender pay gap as he claimed lots of men are bringing in wages for their families.

He told the newspaper: “My wife works really hard as a stay-at-home mum, but I’m the only one bringing in a salary for our family.

“Many men’s salaries aren’t just for them, it’s for their wife and children, too.”