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Sir Martin Sorrell confirmed to speak at ad:tech London

WPP raises digital revenue target http://t.co/7b4xUPVOn2 @marksweney – catch Martin Sorrell's keynote at ad:tech LDN! pic.twitter.com/H7uX4LZlzq — ad:tech London (@adtech_london) August 27, 2014

Sir Martin Sorrell confirmed to speak at ad:tech London Read More »