Rapper Drake has promised to refund thousands of fans after a guest performer’s dramatic plunge on stage blocked a key prop in his set at The O2.

The Canadian superstar, 30, was performing the second in a run of 17 UK shows on his Boy Meets World tour when he invited Travis Scott to join him on Wednesday night at the Greenwich arena.

Travis, 24, ran on to the stage to perform his hit Goosebumps – but moments after being welcomed by the screaming crowd, he fell into a massive hole in the middle of the stage.

He briefly disappeared for a few seconds, before Drake bent down to help him climb out.

Travis, who appeared uninjured, was soon bouncing around the stage again to the delight of the 20,000-strong audience.

But his fall apparently damaged the set, and stopped a huge globe from emerging from the hole – a key prop for Drake’s set.

After Drake became aware of the problem, he announced: "I'm doing this s*** for free tonight."

He repeated his promise of a refund as he ended the concert, telling the delighted audience: "London, England, I love you, I hope you enjoyed your free show!"

Travis appeared to confirm he was fine after the show, tweeting, "The s*** was fun London is wild”, and “By far one of the most turnt and epic s*** ever f***”.

One fan replied "you broke the stage lmao", while another said, "he got straight back up & smashed goosebumps".

Meanwhile, Jake Cockcroft wrote: "can't believe Travis Scott fell down a hole on stage at Drake's concert at the O2 last night."

Drake is unlikely to be left too badly out of pocket if he does go through with his promise of a refund.

Forbes has estimated his wealth at £47million, while there were 4.7billion streams of his tracks on Spotify last year.