When Taylor Swift returns to the stage, London authorities and Wembley Stadium can be taking extraordinary steps for safety — together with some particularly deployed to cease potential terrorists … TMZ has discovered.

Law enforcement sources inform TMZ … Taylor’s 3 upcoming reveals at Wembley can be counting on extra personal safety specializing in counterterrorism, partly in response to the Vienna terror plot foiled by U.S. and Austrian officers.

We’re advised the personal safety power may even be deployed due to ongoing London riots which might be inserting a significant pressure on native police.

Our sources say Wembley, specifically, generally has high-level safety measures in place, particularly in comparison with comparable venues, and it is one of many most secure in Europe from a counterterrorism perspective … however there are nonetheless issues.

Our sources say the massive subject for Taylor’s upcoming Wembley reveals can be defending the throngs of Swifties that at all times collect outdoors her live performance venues.

We’ve already seen enormous crowds outdoors her different European live performance stops, like those in Munich for instance. Fact is, her rabidly loyal followers congregate outdoors venues, even when they do not have tickets, they usually’ll want safety, too.

Ben Knott, operations director at FGH Security in England, tells TMZ … personal safety companies work with police outdoors of occasions the place followers collect, they usually’re normally tasked with sniffing out suspicious individuals.

He says counterterrorism safety forces are inclined to deploy plainclothes and uniformed personnel, whose job it’s to search for unusual individuals within the crowd. If somebody’s scanning the world for cameras and police, that will be an indication one thing’s not proper, and safety would strategy.

In most instances, we’re advised the tactic is to be pleasant with the suspicious particular person, and ask in the event that they need assistance with something — but when safety will get the slightest whiff of something nefarious, police can be referred to as in instantly.

The heightened safety, and the emphasis on counterterrorism measures come within the wake of Taylor’s canceled live shows in Vienna … the place 3 suspects have been arrested for allegedly plotting to detonate explosives inside Taylor’s present, and inflict mass casualties on followers outdoors the venue.

Officially, London Metropolitan Police says, “There is nothing to indicate that the matters being investigated by the Austrian authorities will have an impact on upcoming events here in London.”

However, the inclusion of counterterrorism safety forces reveals Wembley Stadium, legislation enforcement and live performance organizers are taking a greater secure than sorry strategy to Taylor’s London dates.