Also among the nearly 90,000 fans packed into the stadium was Labor party leader Keir Starmer, who was with his wife.
Starmer, who after next month’s election could be Britain’s next prime minister, said on Saturday that Swift “was fantastic. Absolutely fantastic.”
“I know I will be asked what is my favorite song and I am not going to pretend I have got every album and know every song,” he told reporters on the campaign trail.
“Although ‘Change’ is the one for obvious reasons,” he added, referring to the word which is also his election campaign slogan.
Swift is currently touring the UK as part of the Europe-leg of her Eras tour.
She is performing two more shows in London on Saturday and Sunday before returning to the British capital again in August.
She has already staged shows in Edinburgh, Liverpool and Cardiff and will be heading to Dublin next.
The London mayor’s office announced on Thursday that the eight Eras tour performances in London would generate £300 million ($380m) for the city’s economy.
In the lead-up to Friday’s show, the mayor unveiled several murals dedicated to Swift as well as a special Tube map with stations named after songs to mark the tour.
