White Walkers strolled the London streets in advance of Game of Thrones premiere

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      If you were in London last week, you might be forgiven for thinking that things had gotten a little ominous and chilly.

      That's because ahead of last Sunday's (July 16) premiere of the seventh season of Game of Thrones, a gang of White Walkers was seen roaming the streets of the English capital.

      Led by the Night King, they posed in front of Buckingham Palace, marched through Oxford Circus, and crossed over Tower Bridge.

      According to the video, it took each actor four hours in makeup to recreate the look of the Game of Thrones villains.

      Winter is here, indeed.

      Follow Jennie Ramstad on Twitter at @jennieramstad.