The Greatest Dancer returned to screens on Saturday night for another episode of high-energy performance.

But viewers noticed a glaring error on the BBC One show – and took to social media to complain.

Eagle-eyed fans spotted that the show’s receptionist, who greets dancers as they enter the studio, appeared to be typing on a switched-off laptop.

Fans vented their irritation while others cracked jokes about the woman, who chats to contestants before they face the show’s judges – Cheryl, Oti Mabuse and Matthew Morrison.

One viewer posted an image of the receptionist using the computer, which appears to be switched off.

Others joked that maybe she had not realised that she needed to switch the machine on.

Another viewer took a little longer to notice the continuity error. However, when they did, they also took to social media to express their surprise, writing: “Hold on a minute.”

One more viewer gave the receptionist the benefit of the doubt, saying that maybe she had not noticed that her computer had broken.

However, one quick-thinking fan was sure they had come up with a plausible explanation for the receptionist’s apparently broken laptop.

Taking to Twitter, the viewer argued that the receptionist had fitted a privacy filter, which stops people who are not sitting directly in front of the laptop from seeing its screen.