I write the questions for The Chase – there’s a surprising reason you think you’ve heard them all before

A CREW member who writes the questions for The Chase has revealed the surprising reason you've probably heard them all before.

The beloved ITV quiz show is presented by Bradley Walsh, 62, and airs weekdays from 5pm.

Now in its 15th series, the very first episode aired all the way back in 2009.

It sees contestants answer a series of general knowledge questions in the hope of going home with a wad of cash - all the while trying to fend off a professional quiz master.

They are Anne Hegerty, Mark Labbett, Jenny Ryan, Shaun Wallace, Darragh Ennis and Paul Sinha.

Fans of the show may think they've heard the same question being asked before by Bradley - and that's because it probably has.

Fraser Cameron, who sets the questions for the competition, has revealed how it all works.

Speaking to , he said: "Everything you can possibly imagine has already been asked on The Chase at some point.

"There are more than half a million questions on our mammoth database.

"I look at what’s been written before and try to write something in an original way. That’s the hardest part of the job."

Fraser, who has also worked on Tipping Point, said you "have to be so switched on" to work in the role - including listening to people's conversations.

He revealed there's a team of seven people - including four-time world quiz champion Olav Bjortomt and they all aim to write 30 questions each a day - totally a staggering 210 questions.

As for Bradley often hilarious reactions to some intriguing questions, that's all natural.

"He reads the multiple-choice questions for the first time on air, so his reaction is genuine shock," Fraser said.

"Bradley is one of the main reasons why the show’s so popular — he can take a very normal-sounding question and turn it into comedy gold."

The Chase airs weekdays from 5pm on ITV1 and ITVX.