Agentic Commerce UK: What Retailers Should Do Before AI Agents Start Shopping

For two decades, online shopping meant searching, clicking through to a website, browsing and paying. Agentic commerce changes the middle of that journey. An AI assistant does the searching, comparing and, increasingly, the buying, often without the shopper ever seeing your homepage.

In the first half of October 2026, Meta and TikTok both announced agentic shopping features, and retail technology firms working with UK retailers launched their own, on top of what Google and OpenAI already have in market. Very little in-chat checkout is switched on for UK shoppers yet. But the work that decides whether an AI agent recommends your products or a competitor's is the same work that drives Google Shopping and SEO results today.

This guide explains what agentic commerce is, what has launched, what it means in the UK and what to do now. At BlackFire Marketing, we run SEO, paid media and social for UK and US brands, so the focus is on sales and qualified traffic, not hype.

What is agentic commerce?

Agentic commerce is shopping where an AI agent acts on the customer's behalf. Instead of typing a query and clicking ten links, the shopper describes what they want, such as "a waterproof walking jacket under £150 that arrives before Saturday", and the agent finds options, compares them, answers questions and sometimes completes the purchase.

It shows up in three places:

• General AI assistants such as ChatGPT, Gemini and Meta AI.
• Platform shopping assistants such as Google's AI Mode, TikTok's Shopping Assistant and Meta's Business Agent on Messenger.
• Onsite AI shopping agents on a retailer's own website or app.

In every case the agent relies on structured, accurate product information. If your data is thin or inconsistent, you are less likely to be picked.

Why agentic commerce is trending right now

Meta: checkout inside the conversation

At Advertising Week New York on 6 October 2026, Meta said it is testing direct checkout with Shopify in Meta Business Agent on Messenger, so people can buy right after learning about a product from a brand's agent. It will also begin testing checkout in Meta AI with Adyen, PayPal, Shopify and Stripe this autumn. These are tests, and Meta gave no country list.

TikTok: Buy Direct and Shopping Assistant

At the same event, TikTok announced Buy Direct, an in-app checkout for buying directly from a brand from the For You feed, and Shopping Assistant, a conversational agent covering product details, shipping, sizing, availability and purchasing in one conversation. It also announced Agentic Leads for capturing and qualifying leads. No UK dates were given.

Google: Universal Commerce Protocol in AI Mode and Gemini

Google's Universal Commerce Protocol (UCP) is an open standard that lets merchants show a checkout button on eligible product listings in AI Mode in Search and in Gemini, while remaining the seller of record. Google's Merchant Center Help currently limits it to products eligible in the United States, Canada and Australia, and to select merchants.

OpenAI: discovery first, checkout on your site

In March 2026, OpenAI moved away from its original Instant Checkout in ChatGPT to focus on product discovery, with purchases completed on merchants' own sites or apps. OpenAI's merchant page says ChatGPT shopping is live for US users and will expand to more regions over time, and that Shopify and Etsy catalogues are already integrated.

UK retail is already moving

Retail Technology Innovation Hub reported this month that Constructor, whose search technology is used by retailers including The Very Group, White Stuff and Furniture Village, launched a Stripe-powered Agentic Checkout inside its onsite AI Shopping Agent. THG Commerce added labelled Criteo Sponsored Products to its AI Shopping Assistant. And at FT Live's Future of Retail event in London on 6 October, Wolf & Badger's chief executive said the marketplace had already taken an agentic AI initiated order, while stressing it is early days.

What this means for UK retailers today

In-chat checkout on the big platforms is mostly US-first or still in testing. But UK shoppers already use AI assistants to research products, and UK retailers can add AI shopping agents to their own sites now.

So the question for this quarter is not "should we sell inside ChatGPT tomorrow?" It is "when an agent looks for a product like ours, will it find accurate information and a reason to recommend us?" That is a data, content and website question, and most of the fixes improve Google Shopping, organic search and conversion rate in the meantime. For the campaign side of peak season, see our Black Friday marketing guide.

Your product data is now your shop window

As Rithum's Europe managing director put it at FT Live, "Your product page is your new home page." Agents read feeds, product pages and structured data, then decide.

Write for questions, not just keywords

People ask agents detailed questions: who it is for, what size, what material, how long delivery takes. Titles and descriptions should answer those plainly in the language customers use. "Our best-selling jacket" gives an agent nothing to work with.

Fill in every attribute you can

Colour, size, material, age group, compatibility, dimensions and brand all help an agent match your product to a request. On the same panel, L'Oréal Europe's chief digital and marketing officer said the business is moving from around 18 to 20 product data fields towards hundreds. You do not need hundreds to start, but every empty field is a reason to pick someone else.

Keep identifiers, prices, stock and delivery consistent

GTINs, prices, availability and delivery times should match across your website, Google Merchant Center feed, platform catalogue and marketplace listings. Mismatches cost trust and, in some cases, eligibility.

Mark up product pages properly

Google's merchant listing structured data guidance covers Product and Offer markup, including price, availability, shipping and returns. It already underpins free listings and rich results. Our SEO team usually starts here because it is low risk and helps search straight away.

Make your policies and checkout agent-ready

Google's UCP guide for Merchant Center requires a configured return policy, including return cost, return window and a link to the full policy, plus at least one customer support contact, before checkout can be enabled. Those settings help UK shoppers today, whatever happens with UCP.

The same guide lists products that are not eligible for its agentic checkout, including subscriptions, personalised goods, pre-orders, final sale items and age-restricted products. If much of your range falls into those groups, prioritise discovery and a smooth handover to your own site.

On your own website, check that:

• Delivery costs and timings show on product pages, not only at checkout.
• Your returns page is easy to find and written in plain English.
• Stock levels update quickly, so agents do not recommend items you cannot ship.
• Mobile checkout is fast and supports common wallets, because agent handovers often land on a phone.

If your product pages or checkout need rebuilding, our web design team builds ecommerce sites with clean structured data from the start.

Where paid media fits

Ads are already moving into AI shopping surfaces. THG Commerce's integration places labelled sponsored products inside conversational recommendations, Google already serves ads in AI Mode (see our post on Google AI Mode and paid search), and Meta and TikTok are building checkout alongside their ad products.

For advertisers, that means:

• Feeds are ad assets. Shopping, Performance Max and catalogue ads on Meta and TikTok draw on the same product data agents use.
• Creative still matters. People discover products through creators and video before they ask an assistant, so strong UGC and social media management keep your brand in the conversation.
• Judge new placements on revenue. Measure orders, margin and new customers, not impressions.

Our paid media team treats feed quality as part of campaign management for this reason.

Stay on the right side of UK consumer law

If you put an AI agent on your own site, UK consumer law applies in full. The CMA's March 2026 guidance on complying with consumer law when using AI agents makes these points:

• You are responsible for what an AI agent does, as you would be for an employee, even if a third party supplies it.
• If it could affect people's decisions, tell customers they are dealing with AI rather than a person.
• Prices should include all unavoidable charges, offers must be genuine and paid endorsements must be labelled.
• Keep a human in the loop and fix problems quickly.
• Breaches can lead to fines of up to 10% of worldwide turnover.

Agents also lean on reviews, so read our guide to the UK fake reviews law alongside this. This is general guidance, not legal advice.

An agentic commerce checklist for UK retailers

1. Audit your product feed. Check Merchant Center diagnostics, fill missing attributes and fix disapprovals.
2. Rewrite your best sellers first. Clear titles, specific descriptions and real answers to common questions.
3. Align prices, stock and delivery across site, feeds and marketplaces.
4. Fix Product, Offer, shipping and returns structured data and test it in Google's Rich Results Test.
5. Set up returns and support details in Merchant Center and on site.
6. Check whether your platform already shares your catalogue with AI shopping tools, as OpenAI says Shopify and Etsy catalogues do.
7. Ask AI assistants about your category and check whether you appear and whether the details are right.
8. Build CMA-compliant oversight before launching any onsite AI agent.

For getting cited in AI answers more broadly, read our guides to AI search optimisation and GEO and AEO for UK SMEs.

How to tell whether it is working

Brand mentions in AI assistants are a useful signal, but they do not pay wages. Track sessions and orders from AI assistant referrals, conversion rate and order value from those visits, the share of your catalogue approved in Merchant Center, and revenue from Shopping and catalogue campaigns after feed fixes. Our guide on how to measure marketing ROI explains how to judge each channel on sales.

FAQ

Agentic commerce is online shopping where an AI agent acts for the customer, finding, comparing and sometimes buying products from a plain-language request. It runs in assistants such as ChatGPT and Gemini, platform tools such as TikTok's Shopping Assistant and Meta's Business Agent, and AI shopping agents on retailers' own sites.

Not widely on the big platforms yet. Google's UCP-powered checkout covers products eligible in the US, Canada and Australia, OpenAI says ChatGPT shopping is live for US users, and Meta's in-chat checkouts are in testing. UK retailers can add AI shopping agents with checkout to their own sites through commerce technology providers.

Give agents complete, accurate and consistent product data: detailed titles and descriptions, every relevant attribute, matching prices and stock across site and feeds, Product and Offer structured data, and clear delivery and returns information.

Yes. The CMA says businesses are responsible for what their AI agents do, even when a third party provides them. Agents must give accurate prices and product information, and customers should be told they are dealing with AI if it could affect their decisions.

No, it raises the bar. The product data, structured data and clear content that help agents choose you are core SEO and Shopping work, and they keep improving Google results while AI checkout rolls out.

Next step

Agentic commerce is early, but retailers who sort their product data, site and measurement now will be the ones agents trust when checkout reaches the UK. If you want a clear view of how your products show up in search, Shopping and AI assistants, and what to fix first, get in touch. Our SEO and paid media teams can audit your feed and product pages and show you where the quickest sales gains are.