Learning how to start an online shop in the UK is easier than it used to be, but easy to start is not the same as easy to get right. Most new shops struggle because the product was untested, the margins were too thin, or there was no plan for getting visitors. This guide works in order: decide what to sell, choose where and how to sell it, sort the UK legal basics, set up payments and delivery, then launch.
Step 1: Choose What to Sell and Check There Is Demand
Start with a specific customer
“Sell gifts” is too vague. “Reusable gifts for new dog owners, under £30” is a proposition you can test. Write down who the product is for, what problem or occasion it solves, and why someone would choose yours. If you cannot, you are not ready to choose a platform yet.
Test demand before you buy stock
Search for the product on Google and on marketplaces such as Etsy and Amazon. Note who sells it, at what price, and what reviewers complain about — repeated complaints are often your opening. Then apply the tests in our guide to how to validate a startup idea: talk to potential customers, and if possible take a pre-order or a small test listing before buying inventory.
Do the margin maths honestly
For each product, subtract from the selling price the cost of the item, packaging, delivery, platform and payment fees, plus likely returns and advertising. What remains is your real margin. A product that looks profitable before fees can lose money once a marketplace takes its cut and a courier is paid. If the numbers only work at a price customers will not pay, choose a different product now. Starting with very little money is still possible: our guide to how to start a business with no money in the UK covers made-to-order, print-on-demand and selling items you already own.
Step 2: Decide Where to Sell — Your Own Shop, a Marketplace, or Both
Selling on a marketplace
Marketplaces such as Etsy, Amazon and eBay bring you an audience from day one, handle payments and need little technical skill. The trade-offs are fees on every sale, rules you do not control, limited branding, and a customer relationship that largely belongs to the platform. They suit product testing, and handmade or vintage goods — Etsy’s specialism.
Selling on your own website
Your own shop gives you control: your branding, prices, customer data and email list, and no marketplace commission. In return, nobody visits until you bring them there, and you run the site yourself. It is the better long-term home for a growing brand — the route to start an online store UK sellers actually own.
Selling on both
A common pattern is to validate a product on a marketplace, then set up an ecommerce business of your own once you know what sells, keeping the marketplace as an extra channel. Either way, register your own domain early: it makes your brand portable if you move later.
Step 3: Choose a Platform That Fits How You Want to Work
Shopify is a hosted service: hosting, security updates and the checkout are looked after for you for a monthly subscription, plus card fees on payments. It is usually the fastest route to a working shop. Check current UK plans on Shopify’s own pricing page before budgeting, as prices change.
WooCommerce is a free, open-source plugin that turns a WordPress website into a shop. The software costs nothing and takes no share of your sales, but you pay for hosting, a domain and any paid extensions, and you handle updates and security. It suits sellers who already use WordPress or want full control.
Marketplace shops need no platform decision — you open a seller account and list. Either way, build every fee into your prices from Step 1, and recheck fee pages before launch.
So choose honestly: would you rather pay money to save time (hosted), or spend time to save money and keep control (self-hosted)?
Step 4: Register the Business and Get the UK Legal Basics Right
This is the step new sellers most often skip, and the one that protects you and your customers. The legal requirements for selling online UK businesses must follow are specific, but not complicated.
Choose and register a business structure
If you sell regularly to make a profit, you are trading and need a proper structure. As a sole trader you register for Self Assessment with HMRC; GOV.UK says you must register if your business earns over £1,000 in a tax year. A limited company registers with Companies House instead. Still deciding? Our comparison of sole trader vs limited company in the UK covers tax, liability and admin for both. Keep business money separate from personal money, keep records from the first sale, and note that you only register for VAT once taxable turnover passes the VAT threshold, or voluntarily — see our guide to when you need to register for VAT in the UK.
Follow the rules for online and distance selling
Selling online counts as distance selling, and GOV.UK sets out what you must tell customers before an order is placed:
- Your business name, contact details, address and email address
- A clear description of your goods or services
- The total price, including all taxes, and the total delivery cost, or how it will be calculated
- How the customer can pay, and the delivery arrangements, costs and timescales
- How and when the customer can cancel, and a standard cancellation form if they can cancel
- Your VAT number, if you are VAT-registered
Your checkout must make it obvious that ordering means paying — for example, a clearly labelled “pay now” button — list the steps involved, let customers correct mistakes before submitting, and make your terms available in a form customers can store and print. Optional extras must never be charged without consent, so no pre-ticked add-ons. After an order, confirm the contract promptly, for example by email, provide a copy the customer can save, and deliver within 30 days unless you agreed otherwise.
Cancellation rights: the 14-day rule
You must tell customers they can cancel for any reason up to 14 days after delivery. GOV.UK warns that if you do not tell them, the cancellation period can extend to 12 months. Some goods are excepted — for example, personalised or perishable items — and downloads follow different rules: the customer must confirm they understand they will lose the cancellation right once the download starts. Put the rule, worded accurately, in your returns policy. This is general information, not legal advice.
Protect customer data properly
An online shop collects names, addresses, emails and order details, so UK data protection law applies from your first sale. The Information Commissioner’s Office (ICO) expects every organisation holding people’s information to explain, in a privacy notice, why it holds the data, what it does with it, how long it keeps it and whether it shares it — and offers a free privacy notice generator for small organisations. Collect only what you need, keep it secure, and use a reputable payment provider so card details are handled by them, not by you. Order updates are not consent to marketing emails. Extra rules may apply to what you sell, so check your sector on GOV.UK.
Step 5: Set Up Payments Customers Trust
Offer what customers expect: debit and credit cards, and ideally a digital wallet such as Apple Pay, Google Pay or PayPal. Use an established provider through your platform or marketplace rather than asking for transfers to a personal account, which damages trust and leaves buyers unprotected. Check the fee per transaction and payout times, because you will pay for stock and postage before some payouts arrive. Before launch, place a real test order yourself — payment, confirmation email and refund included.
Step 6: Plan Delivery and Returns Before You Need Them
Decide which postal or courier services you will use, what you will charge for delivery (or whether to build it into prices and offer free delivery above a threshold), your dispatch times, and where you will ship to. Selling outside the UK brings different VAT and exporting rules — check GOV.UK first.
Then write your returns process as if you were the customer: how to start a return, who pays return postage, where to send it, and how quickly a refund follows. Your policy sits on top of the customer’s legal rights — you may be more generous than the law, but never less. Publish it where customers can read it before buying.
Step 7: Build Product Pages That Actually Sell
A product page must answer every question a customer would ask in a physical shop.
- Title and description: Name the product as a customer would search for it, then say what it is, what it is made from, its size, who it suits, and how it is cared for. Never claim what you cannot evidence.
- Photographs: Show it clearly, from several angles, in use and at real scale. Accurate photos reduce returns; heavily edited ones increase them.
- Price and stock: Show the full price including taxes, state delivery costs early, and be honest about stock levels.
- Trust details: Link delivery, returns and contact information from every product page.
- Search basics: Write a unique description per product instead of copying a supplier’s text, and give images descriptive alt text.
Step 8: Plan How People Will Find Your Shop
If you want to know how to sell online UK-wide, remember: a shop with no visitors makes no sales. New shops usually combine a few channels:
- Search: Optimise product and category pages for what customers actually type, and publish helpful related content.
- Local visibility: If you also sell in person, offer collection, or serve a local area, our guide to local SEO for small businesses in the UK explains how to appear on Google Maps and in local search.
- Social media and marketplaces: Show products being made, packed and used, and link back to your own shop.
- Email: Offer a genuine reason to join your list, and only email people who opted in.
- Paid advertising: Only once your pages already convert. Ads amplify a working page; they cannot fix one nobody buys from.
Set up analytics and Google Search Console before launch, so you can see where visitors come from.
Your Pre-Launch Checklist
Do not announce your shop until you can tick each item:
- [ ] Business structure chosen and registered, records set up
- [ ] Margins rechecked after platform, payment and delivery costs
- [ ] Business name, address, email and VAT number (if registered) displayed
- [ ] Cancellation rights, delivery and returns policies published
- [ ] Privacy notice published; only necessary customer data collected
- [ ] Checkout tested with a real order, confirmation email and a refund
- [ ] First products live, with clear photos and accurate descriptions
- [ ] Delivery options, costs and timescales tested
- [ ] Analytics in place, and a plan for your first visitors
Starting an online shop is a sequence, not a leap: a tested product, the right place to sell it, legal basics done properly, and a plan for traffic. Get those right and the technology becomes the easy part.
FAQs
How much does it cost to start an online shop in the UK?
It depends on your route. A marketplace account costs very little upfront, but you pay listing, transaction and payment fees on each sale. Your own shop adds a subscription or hosting, a domain and payment fees — plus stock, packaging and delivery, which usually cost more than the website. Check current prices on each platform’s official pricing page before budgeting.
Do I need to register a business to sell online in the UK?
Yes, if you are selling regularly to make a profit — that is trading. Sole traders register for Self Assessment with HMRC and must do so if the business earns over £1,000 in a tax year; limited companies register with Companies House. Occasionally selling unwanted possessions is not running a shop.
What are the legal requirements for selling online in the UK?
Mainly the distance-selling rules on GOV.UK. Before an order you must show your business identity and contact details, clear descriptions, total prices including taxes and delivery, payment and delivery arrangements, and cancellation rights. Customers can usually cancel within 14 days of delivery, and goods must be delivered within 30 days unless agreed otherwise. You must also handle data under UK GDPR, with a clear privacy notice.
Is Shopify or WooCommerce better for a UK shop?
Neither suits everyone. Shopify charges a subscription and handles hosting, security and updates, suiting people who want to start quickly and not maintain a site. WooCommerce is free WordPress software taking no share of sales, but you pay for hosting and maintain the site yourself, suiting people who want control or already use WordPress.
Can I start an online shop with no money?
You can start very cheaply — listing on a marketplace, selling made-to-order products or items you already own, and using a phone for photographs. Fees are still taken from each sale, and packaging and postage are real costs. Treat it as a way to test demand, then reinvest early sales into your own shop.
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