Some of the biggest names in social media like Facebook (FB - Get Report)  LinkedIn (LNKD)  Twitter (TWTR - Get Report)  and Snapchat  (SNAP - Get Report)  call California and New York home. They also have offices in London, not that you would notice them just by walking down the street. 

Well, if you are curious about where each of these social media giants call home, worry no more. TheStreet located their London HQs. Take this quiz and see if you can work out which social media company you would find at these four discreet London office blocks.

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