Sorrell is merging Circus with S4's global content practice, which is built around MediaMonks.
Former WPP boss also accused agencies of hurting their bottom line for sake of 'getting a headline in Campaign'.
Company claims pre-tax profit doubled versus 2017 on a pro-forma basis.
Former chief executive would have got an estimated £5m more if WPP's share price had not dropped.
'The peanut has morphed into a coconut,' Sir Martin Sorrell proclaims as new venture makes second purchase.
In Asia to see how his newly formed company is settling in, Jim Prior talks to Campaign Asia-Pacific about the
The duo that run MediaMonks say they are "very comfortable" that Sir Martin Sorrell will have a right of veto
If you were unfamiliar with MediaMonks and want to know more about the company that Sir Martin Sorrell has made
In an interview with Campaign, Sir Martin Sorrell insisted his new company, S4 Capital, is listening to clients because they
Sir Martin Sorrell's S4 Capital has agreed to buy Dutch content business MediaMonks in a deal that is strikingly different