Animal Style In-n-OutYelp

The wildly popular American fast food chain In-N-Out Burger came to the UK on Wednesday for four hours only.

The restaurant opened at 11 a.m. in Swiss Cottage, London, and closed at 3 p.m.

Business Insider UK was live on Facebook from the restaurant, where hundreds of people queued from as early as 8 a.m — hours before the official opening time. 

Lines stretched down the block outside a restaurant called Estancia Brazil Steakhouse, where the fast-food joint set up. One customer told us she had been queueing for more than two hours. 

The burger chain announced its short stay in the capital in an advert in the Camden New Journal, a local newspaper, saying simply: "First come, first served. Limited quantities for sale."

Screen Shot 2016 09 21 at 11.41.24Claudia Romeo/Business Insider

The last time In-N-Out popped up in Sydney, Australia, their burgers sold out in 10 minutes.

Californians swear by In-N-Out, which is known for its fresh ingredients and "animal-style" burgers.

Screen Shot 2016 09 21 at 11.26.28 Huge queues snaked down the street as Londoners waited to get their hands on an In-N-Out Burger. Claudia Romeo/Business Insider

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