Alesha Dixon and Amanda Holden are believed to be embroiled in a gender pay row after discovering that Simon Cowell and David Walliams are paid twice as much.

Sources claim that the two female judges are demanding that their salaries are topped up as they perform the same job role as their male counterparts.

Amanda, 49, was recently promoted to Acting Head Judge while Simon Cowell missed the recent season of Britain's Got Talent following a horrific biking accident.

While all four judges often remain tight-lipped about how much they take home each year, Amanda recently disclosed that she would return if they paid her the same amount as Cowell.

Amanda is believed to be furious that the judges don't receive an equal pay cheque

The Sun reported that Holden is believed to make around £700,000 for appearing on the variety show while former Mis-Teeq singer Alesha, 42, is believed to pocket £450,000.

It's claimed that David earns a staggering £1.5 million after carving out a new deal while boss Simon, banks an eye-watering £2.5 million per season.

Speaking to the publication, a source said: "Everyone is in agreement Simon deserves his wage as he's the boss, but there seems no obvious explanation as to why David should be paid more than the women.

Big boss Simon Cowell reportedly takes home £2.5 million per year

"It's madness a bloke should be paid considerably more than a woman for doing identical jobs."

The mole went on to say: "Obviously they're not happy and given Amanda, in particular, is so passionate about standing up for what’s right, she won't let this lie.

"She wants to fight and ensure this gender pay divide is a thing of the past once and for all."

During an appearance on Good Morning Britain, Holden was quizzed about her salary by former BGT judge Piers Morgan.

The outspoken breakfast show panellist asked: "Now you've become head judge, is there going to be an unseemly battle if he [Simon Cowell] tries to get it back?"

Amanda instantly replied: "Well I am going to ask for parity of pay, that's only fair, as a female and as the head, I feel I should at least be on the same wage as him.

"And then I can donate it and save some theatres!"

Daily Star Online has approached a representative for Britain's Got Talent.