Taylor Swift cancels Vienna shows due to terror threats against fans, leading to increased security for her London concerts, which are vital to the UK economy. (Getty Images via AFP)Taylor pressed on with her tour and returned to London for a second round of concerts. Experts suggest that security was dramatically increased for her London shows in response to the recent threats in Europe, as Swift’s tour injected nearly $1.3 billion into the UK economy. According to reports from The Times of London, Taylor received heightened security measures when she returned to the UK, allegedly under pressure from government officials. Attorney-general Lord Harmer KC allegedly pressured the police to ensure Swift received the necessary security.