Taylor Swift is set to take to the stage in London, resuming the world's biggest ever concert tour amid tightened security after a foiled Islamic State-inspired attack forced the cancellation of her Vienna dates.
British police said there is nothing to indicate that events in Vienna would impact the five appearances beginning on Thursday at Wembley Stadium, where 90,000 "Swifties" are expected to cheer her on each evening. However, security is set to be tight.
Tay-gating, the practise of gathering outside a Swift show without a ticket, will not be allowed as authorities try to reduce harder-to-control vulnerabilities outside the venue.
Fans at Wembley will enter through metal detectors and are only allowed to bring one small bag. Glass and metal containers, laptops and umbrellas are all banned.
Swift, 34, has previously said her biggest fear was the risk to her fans following two attacks at music events in 2017 - a Las Vegas shooting and a suicide bombing at an Ariana Grande concert in Manchester that prompted a rethink of the way British authorities police major shows.
She said the attacks had made her "terrified" of going on tour and prompted additional planning and safety measures.
"We have to live bravely in order to truly feel alive, and that means not being ruled by our greatest fears," she said in 2019.
The Cruel Summer singer will return fuelled by the positivity, heartfelt lyrics, friendship bracelets and sequined outfits that have made her a global megastar.
She performed in Britain in June to sell-out crowds that included heir-to-the-throne Prince William and two of his children, plus Keir Starmer, who has since been elected prime minister. London also published a special Taylor Swift tube map of her song titles.
Her Eras tour is set to gross over $US1 billion ($A1.5 billion) in revenue, the first to do so, from 149 shows over two years. The last performance will be in Canada in December.
Swift's return to Britain could be emotional after recent events.
On July 29 three young children were killed at a Taylor Swift-inspired dance class in Southport, northern England. Swift told her 284 million Instagram followers that she was "completely in shock" over the "loss of life and innocence".
She has not said anything on the Vienna cancellations.
Security experts said British authorities had learnt from the Manchester attack, which killed 22 people including young children, with police, venue security and organisers working as one to protect a venue.
