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17 October 2014 Last updated at 17:29 BST
They are part of a collection of up to 60 bus sculptures, commissioned by Transport for London, which will be placed across London on four walking trails as part of the Year of the Bus.
Wendy Hurrell reports.
Twenty-eight new Routemaster bus sculptures, painted by well-known and aspiring artists have been unveiled in Trafalgar Square.