Martin Sorrell plots his comeback by taking the helm at Derriston Capital

Sir Martin Sorrell has returned to the advertising industry just weeks after being forced out of WPP, the advertising holding company he founded over 30 years ago.

Sorrell will become executive chairman of Derriston Capital with the UK-based investment firm set to acquire an entity called S4 Capital, which has recently completed a £51m equity fundraising.

Derrison is to change its name to S4 capital – which it is understood refers to four generations of the Sorrell family.

In a statement, the group said it is to embark on a “new corporate strategy to build a multi-national communication services business, initially by acquisitions.”

Sorrell commented: “S4 Capital is a company that aims to build a multi-national communication services business focused on growth.

“There are significant opportunities for development in technology, data and content. I look forward to making this happen.”