CSS Group calls for reciprocal access in Shopping results

What changed

An open letter published by Shoptimised on 8 September 2026 sets out CSS Group's concerns about access to Shopping results and the direction of DMA enforcement. The signatories argue for model-neutral treatment, reciprocal visibility and testing of proposed changes in the live market. Their position is that the design of access matters to competing comparison-shopping services.

The statement is evidence of what the group is asking for, not a finding that every allegation has been established or that a new advertising rule has taken effect. It does not announce a campaign setting, a change in merchant eligibility or a timetable for a particular remedy. Those distinctions are important when discussing the letter with teams that buy Shopping inventory today.

For advertisers, the immediate value is to understand the commercial questions behind the debate. Which parties can participate in the shopping journey, how their products or services become visible, and how a proposed model would be tested are all relevant to future distribution. The answers cannot be read directly from a signatory's preferred outcome; they require the actual adopted design and evidence from implementation.

Keep current campaign decisions grounded in the inventory and reporting that are available. If a business works with a comparison-shopping provider, ask that provider to explain any confirmed operational change separately from its policy position. Document the practical effect on account ownership, reporting and merchant experience before treating a policy discussion as a reason to move budgets or restructure a feed.

This Week 37 item records a dated industry intervention. The official source link leads to the published letter, and the image preserves the letter's context. Future coverage should distinguish a response from regulators, an agreed implementation and measured market effects. For now, the call for reciprocal access and live testing belongs to the signatories; no enforcement outcome or proven performance consequence is implied.

Why it matters for advertisers

An open letter published by Shoptimised sets out CSS Group's position on Shopping access and DMA enforcement. The signatories call for reciprocal visibility and testing of proposed changes. This is an industry position, not an enacted advertising rule.