Prince William appears to swear in frustration during Wimbledon

Eagle-eyed Wimbledon fans got a shock when Prince William appeared to swear in frustration during Cameron Norrie's quarter-final match.

The 26-year-old star lost a point to Belgian David Goffin, which saw the Duke shake his head and seemingly utter "no, no, no, f***" under his breath.

'Can't be unseen! So glad he's human,' one fan wrote on Twitter of the incident, while another added: 'Bit of a character, just like his grandfather.'

We'll leave it to the royal to confirm what was actually said in that tense moment.

Click here to sign up to our newsletters.