S4 Capital said the merger would help expand MediaMonks’ presence and capabilities in China, which is the world’s second largest advertising market, 80% of which is digital advertising.

Tomorrow, which was founded in 2015, employs 50 people and focuses on integrated brand and social campaigns.

The merger will leave S4 Capital’s Asia-Pacific staff numbers at 500 people, equivalent to almost an eighth of the company’s total workforce. Terms for the merger have not been disclosed.

The latest merger follows the acquisitions of creative agency Decoded Advertising and data-driven performance marketing firm Metric Theory earlier this month.

Sir Martin Sorrell (pictured), executive chairman of S4 Capital, said: “I’ve always been a raging bull on China’s economy, its consumers and its brands. I’m delighted to welcome Tomorrow to the S4 Capital family, in what is a priority market for us and one of several more moves in what will become the largest economy in the world.”

Victor Knaap, chief executive of MediaMonks and executive director of S4 Capital, said: “MediaMonks and Tomorrow share a passion for creative excellence and given both of our successes so far in China, I can’t wait to see what 2021 brings for our combined business.”

Rogier Bikker, chief executive and founder of Tomorrow, said: “We are incredibly proud of what we have built at Tomorrow and couldn’t be more excited about this next stage as we partner with MediaMonks and S4 Capital to be a disruptive creative force in China.”