Account wins put Sorrell's S4 Capital on course to double in size

LONDON (Reuters) - Martin Sorrell said his new digital advertising company S4 Capital was increasingly being asked to bid for major corporate accounts, keeping it on track to double the size of the company by 2021. Sorrell launched S4 Capital last year after he left the world's biggest advertising company WPP , which he had founded. He said on Wednesday he was focusing on growing revenue and gross profit at the expense of slightly lower earnings, to build momentum. The group has already won..