It comes as her shows in the UK this year are predicted to have brought £1billion to the economy
"I don't want to let you think that we don't care about Swifties," Chris Martin said
"I am not going to speak about something publicly if I think doing so might provoke those who would want to harm the fans who come to my shows"
The singer's eighth and final Wembley show of the 'Eras' tour also featured appearances from Florence Welch and Jack Antonoff
The video was unveiled at the end of her final Wembley Stadium show for the 'Eras' tour
The surprise appearances mark the final 'Eras' tour show at Wembley and the last night of the European tour
He described her as “such a smart lady” and “so talented”
She has reflected on the "once-in-a-lifetime" gig on social media
Both the pop singer and her mother Andrea took the time to take photos with them backstage at Wembley
She also recognised a fan from the 'Eras' tour the day earlier