How to sell on the B&Q marketplace

B&Q's marketplace lets other businesses sell on diy.com, next to B&Q's own range. It has grown fast. In the year to 31 January 2026 it sold £445m of goods, up 44%, from 3.7 million products. B&Q says diy.com had over 464 million visits in 2025.

That is a big audience of people planning projects. But B&Q is selective about who sells there and strict about service once you are in. This guide covers how to apply, what it costs, how delivery works and the standards you will be measured against, as at the time of writing (October 2026).

How the B&Q marketplace works

B&Q launched its marketplace in March 2022, built on Mirakl marketplace software. Mirakl is also your seller back office: you manage products, orders, customer messages and statements there.

Marketplace products appear in search results in the same way as B&Q's own. The product page carries a "Sold & shipped by" label with your business name, and at checkout items are grouped into those from B&Q and those from verified sellers.

Two rules shape what you can sell:

• No duplicates of B&Q's own range. You can sell drills, but not a drill with the same EAN (barcode number) that B&Q already sells. Those products are rejected as a "Duplicate of a first party product".
• One offer shown per product. If several sellers list the same product, customers see only the offer with the best customer promise, judged on factors including price and availability.

So the best opportunities are products B&Q doesn't stock, or ones where you can beat other sellers on price and availability.

Who can sell and what B&Q looks for

The application form is open to anyone, but B&Q says applications are assessed against a range of criteria to make sure they meet its "high bar for customer experience". The form asks for:

• Company name, VAT number, company registration number and country of registration
• Your type of business: importer, retailer, manufacturer or wholesaler
• Your main product categories, annual turnover and how many products you expect to sell
• Whether you can ship direct to customers, and your average delivery time
• Whether you sell on other marketplaces, with a link to one of your shops
• The platform you use to manage listings, such as Shopify, ChannelEngine or a custom API

B&Q's merchant FAQs summarise the main requirements:

• Fulfilment: ship within 2 days, deliver within 7 days and provide tracking.
• Customer service: respond to customer queries within 48 hours, resolve them within 72 hours, and deal with B&Q on urgent matters within 24 hours.
• Data: upload products with the required attributes and images of the version you sell, and fix product issues within 2 days of B&Q flagging them.
• Legal and financial: a valid VAT number, a UK legal entity address on your packaging, at least £2m of product liability insurance, and a credit check rated A, B or C.
• Integrity: sign up to the Kingfisher Code of Conduct and pass background checks for bribery and corruption risk.
• Product compliance: UKCA marking for Great Britain (or CE for the rest of the UK), UK REACH, current energy labels for electrical products, and proper instructions.

If you sell wood or paper products, there are sourcing rules too. B&Q wants 20% of them FSC certified, PEFC certified or verified recycled by 31 December 2025, rising to 100% by 31 December 2028.

Overseas businesses can apply. The FAQs say sellers must initially be UK based with goods in the UK, but Kingfisher says it has started onboarding cross-border sellers, so ask what applies to you.

Categories

The application lists these main categories: access and storage, automotive, bathrooms, electrical, electronics and photo, fitness, fixings, fasteners and ironmongery, flooring and tiling, hand tools, heating and cooling, home, kitchens, lighting, outdoor, painting and decorating, pet care, plumbing, power tools, power tool accessories, and safety and workwear.

Some products are banned outright, such as fur and anything illegal to sell in the UK. Check the prohibited items list in the Merchant Hub before you plan your range.

How to apply, step by step

1. Complete the application. It has three short steps: business details, contact details and your activity. B&Q says it takes 2 minutes, and a Business Development Representative will guide you from there.
2. Agree terms. Once your application progresses and you sign the terms and conditions, B&Q creates your Mirakl shop and gives you access to the Merchant Hub.
3. Set up your shop. Add shop details, returns address, bank details and user access.
4. Pass compliance checks. Complete payment verification with Hyperwallet (B&Q's payment provider), upload your liability insurance and supply any tax or product documents. B&Q may ask for declarations of conformity, safety data sheets, test reports or certificates, depending on the product.
5. Load products and offers. Brand names are reviewed and approved in Mirakl, and at least one product and offer must be correctly set up.
6. Configure delivery and pass final checks. Set your delivery promise, shipping zones and returns information. B&Q then checks everything before your shop opens.

B&Q says setup typically takes less than five working days from application to going live. That assumes your documents and product data are ready.

Getting your products live

Mirakl handles products and offers separately:

• A product is the customer-facing listing: title, description, images, EAN, brand, attributes, dimensions, materials and any required documents.
• An offer is your commercial information: price, stock quantity, lead time to ship and logistics class.

You can add them by manual entry, CSV or Excel upload, API, Mirakl Connect or a third-party integrator. B&Q says file upload is often the simplest way to start. If you use the API, you test in a pre-production environment first, with separate keys for live.

Every product needs a valid EAN. If you're unsure where yours came from, read our guide to GTINs and barcodes first. DIY shoppers buy on detail, so fill in every attribute you can: dimensions, power, compatibility, materials and what's in the box.

Delivery, Click & Collect and returns

Delivery

B&Q provides no fulfilment service. You ship every order yourself with the courier of your choice. Orders must arrive within the time in your listing and no later than 7 days after purchase, and B&Q expects dispatch within 2 days.

There are no separate delivery charges for marketplace products on diy.com. Your price must include delivery. That matters most for heavy and bulky products, so work out delivery cost per product before you set a price.

Packaging must show your UK legal entity address, must not carry a fulfilment partner's branding and must not include flyers or promotional material, apart from warranty information.

Click & Collect

B&Q has rolled out marketplace Click & Collect across 300 stores. When a customer chooses it, you ship the order to their chosen store. It is free for customers, and you can't charge a delivery fee for it. It is available on selected products from selected sellers, is only available in Great Britain, and doesn't cover B&Q's 15-minute or same-day collection.

Returns

Marketplace items follow B&Q's 90-day returns window. Customers use the "Contact seller" link, and you arrange a collection from their home. Some items can be returned in store, but not items over 100 x 70 x 60cm including packaging, over 30kg, or containing lithium, glass, ceramics, liquids, chemicals or plants. For change-of-mind returns over 30kg, you may charge up to £50, deducted from the refund.

Products cut to size, made to measure, perishable (such as plants) or opened hygiene items can't be returned unless faulty. B&Q's merchant FAQs say sellers cover the cost of collecting returns, and refunds are processed within 14 days. Build a returns allowance into your pricing.

Fees and payments

B&Q charges a monthly subscription plus commission on each sale, with the rate set by product category. On the numbers:

• B&Q's merchant FAQs put the subscription at £49 a month. Integration partner ChannelEngine lists it as £39 a month, with commission of 7% to 15%.
• Kingfisher, B&Q's parent company, says its marketplace commission works out at around 10% to 15% of GMV (gross merchandise value, the total value of goods sold including VAT).
• Commission rates in Mirakl are shown excluding VAT. B&Q's own example: a 15% rate is charged as 15% plus VAT, so 18% in total.

Watch for other charges. If a refund is due to your error, B&Q claws back the commission plus VAT. If a customer returns an item to a store, the carrier cost of getting it back to you is recharged monthly. You are also liable for chargebacks, except in cases of fraud.

B&Q pays twice a month, on the 1st and 15th, through Hyperwallet. Depending on the order date, you are paid 22 to 35 days after the sale. Plan your cash flow around that gap.

For each product, model the price against commission plus VAT, delivery, packaging, a returns allowance and a share of the subscription. Confirm your category rates in writing when you apply.

Service standards and suspensions

Orders are accepted automatically. If you then can't fulfil one, you have to trigger the refund yourself. Accurate stock is essential, especially if you sell the same items elsewhere. Our guide to stopping overselling explains how to keep channels in sync.

All customer contact must go through Mirakl. You can't phone customers or move the conversation elsewhere. B&Q says its sellers typically reply within 1 to 2 hours. If a query is still unresolved after 48 hours, B&Q's customer service team steps in, and you then have 24 hours to propose a solution. If you don't, your trading is suspended until it's resolved and B&Q can refund the customer on your behalf.

B&Q can also suspend sellers for breaching service levels on customer ratings, defect rate, incident rate, availability or shipping time, for selling restricted products, or for trying to take sales off the platform. Your account manager sees your incident count, average response time and time to resolve, and B&Q says this feeds into commercial discussions.

Before you apply: a checklist

• VAT number, company number and at least £2m of product liability insurance in place.
• A range that doesn't duplicate B&Q's own barcodes, in categories it lists.
• Valid EANs, full attributes and good images for every product.
• Delivery costs built into prices, with couriers that can deliver within 7 days and provide tracking.
• Compliance documents ready: UKCA or CE, energy labels, instructions, and timber sourcing evidence where relevant.

If you would rather someone else handled the application and day-to-day running, book a free 20-minute demo with Polymerchant. We look at your products and the channels you sell on today, and walk through how a launch works. To compare B&Q with Tesco, Argos and others, see our guide to UK retailer marketplaces.