How to Use AI for Shopping UK | Save Money

Why UK Shoppers Are Turning to AI

According to Adyen's 2026 UK Retail Report, 28 per cent of UK shoppers now use AI as part of their shopping process. Most of that growth is driven by younger shoppers, but the tools are just as useful for anyone on a fixed income or a tight monthly budget. If you know what to ask, AI can cut through the comparison-site noise and help you shop more carefully.

This guide shows you exactly where to start, what to say, and how to stay safe.

How AI Shopping Tools Actually Work

AI chatbots like ChatGPT and Gemini can read and summarise information from across the internet in seconds. You type a question in plain English and the AI answers it. For shopping, that means you can ask questions you might otherwise spend half an hour searching for yourself.

Three things AI does well in a shopping context:

• Research and comparison: comparing products on features, reviews, and expected price ranges so you can make a confident choice
• Voucher and discount codes: searching for active codes before you get to the checkout
• Budget planning: helping you plan meals or household purchases within a set figure
• Review summaries: reading hundreds of customer reviews and pulling out what most people agree on, which can save an hour or more

There are limits. AI cannot always access today's live prices, and it may not know about a flash sale that started this morning. Think of it as a knowledgeable friend who has read most of the internet, but not today's version. You still check prices yourself before buying.

I have been using ChatGPT and Gemini for shopping research over the past year, mostly for comparing appliances and planning weekly meals. When I asked ChatGPT to compare robot vacuums under £200 before a recent purchase, it summarised several hundred reviews and flagged a recurring motor problem with the model I had originally chosen. I switched to its recommendation and paid around £35 less. That kind of detailed breakdown would take most people 45 minutes to put together from individual review pages.

What You Need to Get Started

You do not need to spend any money to get started. The free versions of ChatGPT and Gemini handle every task in this guide.

• ChatGPT (free): go to chatgpt.com and create a free account. No subscription is required for any of the prompts below.
• Gemini (free): built into Google search and available at gemini.google.com. If you use Gmail or Google Maps already, you likely have access.
• Amazon Rufus: already inside the Amazon UK app. Tap the chat bubble icon at the bottom of the screen to try it.
• Pouch (browser extension): a free UK-focused add-on for Chrome or Firefox that automatically tries discount codes at checkout without you needing to ask anything. A useful complement to the ChatGPT prompts below.

If you have never used ChatGPT before, our guide to setting up ChatGPT walks you through the whole thing in under ten minutes.

Five Copy-Paste Prompts for UK Shopping

Specific questions get specific answers. These five prompts are designed for common UK shopping situations. Copy them directly and change the details to match your needs.

1. Compare supermarket prices on your usual basket

Rather than visiting two websites yourself, you can ask AI to do the comparison for you.

I do my weekly food shop at Sainsbury's and sometimes Tesco. My usual basket includes semi-skimmed milk, bread, cheddar cheese, chicken breasts, eggs, and pasta. Which supermarket tends to be cheaper for these items, and is it worth switching for the savings?

The AI will often suggest Aldi or Lidl as a useful alternative if your basket is large enough to make the trip worthwhile.

2. Plan a week of meals on a tight budget

This prompt turns a vague aim into a specific shopping list you can actually use.

Can you plan seven evening meals for two people on a budget of £40 for the week? I shop at Tesco. Please include a full shopping list and make sure all the meals are simple to cook for someone who is not very confident in the kitchen.

Meal planning is one of the most practical things AI can do for UK households right now. It saves both time and money without any special knowledge on your part.

3. Find a discount code before you buy

ChatGPT has a knowledge cut-off date, so it cannot see today's live promotions. What it can do is recall codes that were active up to that date and explain typical discount patterns for a retailer. Treat any code it suggests as a starting point to test at the checkout rather than a guarantee of saving.

I am about to buy a Russell Hobbs kettle from Argos online for around £30. Are there any discount codes or promotions for Argos UK that you know of? Please list any codes you are aware of, even if they may no longer be active.

Always test any code at the checkout before assuming it works. For reliably up-to-date codes, Pouch (the browser extension mentioned above) checks live prices at the point of checkout.

4. Summarise reviews before you buy

Rather than reading through hundreds of individual reviews, you can ask AI to pick out the pattern across all of them.

I am thinking about buying the Ninja Foodi AF300UK air fryer from John Lewis. Can you summarise what customers generally say about it? I want to know the main things people like, any common complaints, and whether most people think it is worth the money.

5. Write a complaint letter to a retailer

AI is surprisingly effective at drafting formal complaint letters. It can structure the argument clearly and keep the tone measured, which is harder to do when you are frustrated. Use the draft as a starting point, then check your specific rights before sending. AI can occasionally get legal details wrong.

I bought a toaster from Currys two months ago and it stopped working last week. Under the Consumer Rights Act 2015, I believe I am entitled to a repair or replacement. Can you write a polite but firm letter asking them to sort this out, addressed to their customer services team?

For guidance on your specific rights before you send a complaint, the Which? consumer rights guide is a reliable starting point.

For more ideas on what to ask AI, our guide to ChatGPT prompts for beginners has dozens of ready-to-use examples across shopping, health, travel, and everyday admin.

AI Shopping Tools Already Available in the UK

Beyond ChatGPT and Gemini, a few tools have launched in the UK that are worth knowing about.

Amazon Rufus launched in the UK through the Amazon app in 2025. Open the app, tap the chat bubble at the bottom, and ask things like "What is the best robot vacuum under £200?" instead of scrolling through a page of search results. It guides you through the options rather than just listing products.

OpenAI has launched a dedicated shopping research feature that builds a personalised buyer's guide from a short description of what you need. You describe what you are looking for, it asks a few follow-up questions, then produces a structured comparison with links. This is rolling out to UK users during 2026, starting with Plus subscribers (around £16 per month; check OpenAI's pricing page for the current rate), with the free tier expected to follow.

ASOS has a conversational shopping tool that helps narrow choices based on your style and budget. Several major UK supermarkets, including Sainsbury's, are also trialling AI assistant features in their apps that can suggest meals or highlight weekly offers; availability varies, so check your usual supermarket's app for a chat or assistant icon. These tools do not replace your own final check, but they do cut the initial research time for most purchases.

How to Stay Safe When Using AI for Shopping

AI shopping tools are safe for everyday use, but a few simple rules help you stay in control.

What does AI see when you use it?

When you type into ChatGPT or Gemini, that text is sent to the company's servers to generate a response. If you paste a shopping list, the AI sees your shopping list. If you mention your income, the AI records that for the session.

None of this connects to your bank account or payment details unless you type them in yourself. The rule is simple: never share your card number, account password, sort code, or NHS number with any AI chatbot. The Age UK guide to understanding AI makes the same point.

For the full picture on ChatGPT's privacy settings, our guide to ChatGPT and privacy explains exactly what OpenAI stores and how to limit it.

ICO guidance on AI shopping agents

The ICO, the UK's data privacy regulator, published guidance on agentic commerce in January 2026. This covers newer AI tools that can browse websites and make purchases on your behalf without you clicking buy. If you ever use a service like that, you have the right to know what personal data it holds and to ask for it to be deleted. You can raise a complaint with the ICO if something goes wrong.

The tools in this guide are advisory rather than transactional. They recommend; you decide and click buy yourself. Your consumer rights with the retailer are unchanged by how you researched the purchase.

Watching out for fake deals and dubious sites

AI can help you research products, but it can also be wrong about whether a particular retailer is legitimate. If AI recommends a website you have never heard of, check it on MoneySavingExpert or search for reviews on Trustpilot before you buy. Our guide to staying safe with AI covers the warning signs.

Curious how AI can help with bigger money goals beyond shopping? Explore the WellWired Academy, a short guided course on using AI safely for everyday finances.

Going Further with AI and Your Finances

Shopping savings add up. But AI can do a good deal more for your wider finances if you want it to. Our guide to using AI for managing money covers monthly budgeting, pension queries, and finding where your spending can be trimmed without much effort.

If you would like to learn all of this step by step, with video walkthroughs and guided exercises, the WellWired Academy is a short, practical course built for people who are new to AI. It covers ChatGPT alongside other useful tools and takes you from first login to confident everyday use.

Frequently Asked Questions