Taylor Swift teamed up with The Script's Danny O'Donoghue last night (February 4) in London.

The Irishman joined the US star on stage at the O2 Arena to run through his band's track 'Breakeven'.

He is the latest singer to duet with Swift on the UK leg of her Red Tour, following on from Ed Sheeran and Sam Smith.

Before the former Voice UK coach hit the stage, the country pop star praised The Script's songwriting.

Speaking about the collaboration post-show, the '22' lady said on Twitter: "Tonight's surprise guest at the O2: Danny O'Donoghue from The Script singing 'Breakeven'. The crowd went absolutely insane!! #redtourlondon."

Swift meanwhile has two more dates left on her O2 Arena run, with the singer set to play the massive venue again on February 10 and 11.