The advertising business has always been one where clients depart — sometimes noisily, sometimes with the quiet efficiency of a guest who slips out of a party without saying goodbye. The question for holding companies has never been whether accounts will leave, but whether anyone will notice the warning signs in time to do something about it.

WPP, it seems, would like to notice sooner.

Cindy Rose, the chief executive who took the helm nearly a year ago, said the company was developing what she called a "client success program" — a formalized system to identify accounts at risk of defection and to apply the group's better client-management habits more consistently across its agencies.

"It will help us identify retention risks early and be much more operationally disciplined and bring more excellence to our service delivery model," Ms. Rose said on a call with reporters following the release of WPP's interim results.

The initiative arrives as WPP continues to absorb the impact of account losses that predated Ms. Rose's arrival. Revenue less pass-through costs fell 4.7 percent on a like-for-like basis during the first half of 2026, though the decline moderated to 2.8 percent in the second quarter — a trajectory that investors found encouraging enough to send shares higher in early trading.

Ms. Rose pointed to recent retention wins, including Huawei in China, Tesco in Britain, and L'Oréal in Australia and New Zealand, while acknowledging the obvious limits of any such effort.

"Defensive pitches are a feature of this industry and we're not going to win them all," she said. "And frankly, we don't need to win them all."

(One imagines the filing cabinet in which that particular piece of wisdom is stored has been growing heavier for decades.)

Joanne Wilson, the chief financial officer, told analysts that net new business would remain a drag throughout 2026, though a diminishing one. The pitch pipeline, she said, was "very healthy" — and notably larger than last year, when the industry's appetite for agency reviews was unusually subdued.

WPP has topped JP Morgan's net new-business rankings for the first half, with wins including Estée Lauder, Jaguar Land Rover, Henkel and Honda. Whether the new early-warning system will prove to be a genuine operational improvement or simply a more organized way of watching clients leave remains, for now, an open question.

Original story published in The Drum: "Cindy Rose: WPP building early-warning system to prevent another cycle of client losses | The Drum"