The prop was accompanied by break dancers, who performed on the hour from 7am till 7pm, as well as real-life versions of the Samsung AddWash.
A stand with more details about both Currys PC World and Samsung's kitchen appliance was located nearby.
Ambassadors were on hand to offer passers-by single socks, as part of the brand's #NoSockLeftBehind competition, where those who took their garment back to the washing machine had the chance to win £1,500.
The company also ran a competition to find the best socks on social media, where consumers who shared their photos could win Currys PC World vouchers amounting up to £250. Entries were judged by the hosiery company Happy Socks.
Zeena Hill, head of white goods marketing at Currys PC World, said: "The new Samsung AddWash is innovative in its design and presents an insight into the future of washing machines, meeting the needs of everyday, time-poor consumers.
"When choosing a destination to celebrate the new appliance and Currys PC World, as a brand, it seemed only fitting that London’s hub of creativity and one of the busiest locations in the world, play host."
King's Cross station also hosted Haribo's life-size bunnies yesterday (23 March) as part of the brand's Easter activity.
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