WPP will publish its third-quarter trading update on Oct. 29, 2026, giving marketers a new view of client spending and the advertising group’s recovery efforts. The confirmed event follows a first half in which revenue less pass-through costs declined, even as the company said it expected an improving like-for-like trajectory in the second half.
This preview sets out questions supported by WPP’s published results and event notice. It does not forecast the forthcoming numbers or suggest management has committed to answering every question below.
Start with the right revenue measure
WPP’s August interim release reported first-half revenue of £6.373 billion, down 4.4% on a reported basis. Revenue less pass-through costs was £4.745 billion, down 5.6% reported and 4.7% like for like.
Those are different measures, not interchangeable descriptions of the same growth rate. The first useful comparison in the October update will be whether the company reports a change in the like-for-like trend for revenue less pass-through costs. A better reported rate alone would not establish that underlying client demand improved by the same amount.
For marketing leaders, that distinction matters when agency performance is used as a proxy for the broader advertising market. One supplier’s results cannot describe every client’s budget, geography or channel. Any comparison should retain the metric, period and currency basis used in the release.
Separate the operating picture from adjustments
The interim release reported operating profit of £261 million, up 18.1%, while headline operating profit was £398 million, down 3.4%. WPP presented headline measures separately from reported results.
The coming trading update should therefore be read on its own terms. It is not appropriate to assume it will contain the same detail as a half-year financial release. Where an updated measure is absent, the August figure remains historical context rather than a new quarterly result.
A useful question is whether management provides evidence connecting its recovery programme with client retention, new work or delivery. Announcing a programme and demonstrating a commercial outcome are different steps. This is an editorial framework for assessing the update, not a claim that a particular outcome has already occurred.
Translate supplier signals into client questions
WPP’s event notice confirms that the update covers the three and nine months ended Sept. 30. That reporting boundary is important: announcements made after September are not, by themselves, evidence of activity during the quarter.
Advertisers assessing their agency relationships can use the release to frame questions about account continuity, delivery responsibilities and measurement. They should not infer changes to their own contracts, staffing or service standards from a group-level financial trend alone.
The most useful outcome on Oct. 29 will be a clearer separation between current trading facts, management’s expectations and initiatives whose results remain ahead. Until the update is released, none of those expectations should be presented as the quarter’s settled performance. This preview offers no investment recommendation.