Choosing between .co.uk or .com comes down to where your customers are. If you mainly sell to people in the UK, pick .co.uk: Google treats it as a signal that your site is for UK users. If you sell worldwide, pick .com. Neither ranks higher by itself. If you can, register both and redirect one to the other.
Most of the pages that answer this question are written by companies that sell domains, so they tend to finish with “buy both, buy them here”. Some of the advice is years old, and a couple of common claims don’t match what Google actually says. I’ve checked everything below against Google’s own Search Central documentation and Nominet, the registry that runs .uk, on 3 November 2026. Getting the domain right is the first thing I sort out when I build a new website for a London business, so I’ve also added exactly what I’d do in your shoes.
Key takeaways
- UK customers? Choose .co.uk. Selling around the world? Choose .com.
- Google says country domains like .co.uk give it a strong signal that a site is meant for one country. A .com is treated as generic, with no country attached.
- Neither ending makes you rank higher on its own. Your content, links and Google Business Profile matter far more.
- Nominet’s January 2026 research found 83% of UK consumers believe a .co.uk domain is trustworthy.
- If you own both, pick one as your main address and 301 redirect the other to it. Don’t run two copies of your site.
- Register the domain in your business’s name, never your web designer’s.
What is the difference between .co.uk and .com?
The difference between .co.uk and .com is that .co.uk is the UK’s own country domain and .com is a global, generic one. A .co.uk is part of the .UK family run by Nominet, and Nominet’s policy says .co.uk domains “are intended to be used for commercial purposes” (Nominet .UK Registration Policy).
Size is the other big difference. Nominet says it manages 10.4 million .UK domains, of which 8 million are .co.uk (Nominet, statistics as of May 2026). There were 169.8 million .com domains at 30 September 2026 (Verisign Domain Name Industry Brief, Q3 2026). That’s why a short, obvious .com name is so often taken, while the same name in .co.uk is more likely to be free.
Here’s how the two compare for a small business:
| .co.uk | .com | |
|---|---|---|
| Type | UK country-code domain (ccTLD) | Generic domain (gTLD) |
| Run by | Nominet (UK) | Verisign (registry for .com and .net) |
| What Google reads from it | A strong signal the site is for the UK | No country signal: Google uses other clues |
| Number registered | 8 million (May 2026) | 169.8 million (September 2026) |
| Chance your name is free | Usually better | Usually worse |
| Best for | Businesses serving UK customers | Businesses selling in several countries |
| Ranking boost on its own | None in general (helps UK targeting) | None |
Is .co.uk or .com better for SEO?
For a business targeting UK customers, .co.uk has a small edge, because it tells Google which country you’re for. It doesn’t make you rank higher in general. Google’s documentation says country-code domains “provide a strong signal to both users and search engines that your site is explicitly intended for a certain country” (Google Search Central: Managing multi-regional sites).
A .com is what Google calls a generic top-level domain. On the same page, Google lists the other signals it uses to work out who a site is for: hreflang, server location and “other signals” such as local addresses and phone numbers on your pages, local language and currency, links from other local sites and your Business Profile. So a London plumber on a .com with a London address, a 020 number, prices in pounds and a verified Google Business Profile is not going to vanish from UK results.
Two myths worth binning while I’m at it:
- “Owning both domains boosts your SEO.” It doesn’t. A redirect from your spare domain just tells Google which address is the real one. Google calls a redirect “a strong signal that the target of the redirect should become canonical” (Google: canonical URLs).
- “Google gives .com sites more trust.” Nothing in Google’s documentation says so. What it does say is that a .com has no country attached, so you need those other local signals.
If your website isn’t showing up at all, the domain ending is almost never the reason. Start with my guide to why a website isn’t showing on Google.
Do UK customers trust .co.uk more than .com?
Yes, most UK consumers see .co.uk as a trustworthy, familiar ending. In January 2026, Nominet commissioned a study of 2,000 UK consumers aged 18 to 64. Research conducted by Vision One Research in 2026 found that (Nominet: UK consumer perceptions of .co.uk):
- 93% of UK consumers have heard of a .co.uk domain
- 83% believe a .co.uk domain is trustworthy
- 85% believe it is credible, and 82% believe it is safe
- 8 in 10 believe it is secure, and more than 8 in 10 believe it is professional
Two fair caveats. Nominet runs .uk and says it published the figures to support registrars’ marketing, so treat them as a decent guide, not gospel. And the study asks how people see .co.uk, not whether they’d pick it over .com. The “81%” and “4 in 5 prefer .co.uk” figures you’ll see on many domain-seller pages usually come without a date, so I wouldn’t lean on them.
When is .com the better choice?
A .com is the better choice when a good chunk of your customers are outside the UK, or will be soon. Google’s documentation notes that a country domain “can only target a single country”, while a generic domain like .com can serve several countries using sections such as example.com/de/ (Google Search Central).
That makes .com the sensible pick for an online shop that ships to Europe or the US, a tour company selling to overseas visitors, or a consultant whose clients are spread around the world. It’s also fine if your brand already lives on .com and customers know it. Switching just because you’ve read that .co.uk is “better” isn’t worth the hassle.
Which should I choose: .co.uk or .com?
Pick .co.uk if your customers are in the UK and .com if they’re spread across countries. If you’re still not sure, find your situation in this table:
| Your situation | What I’d choose | Why |
|---|---|---|
| Local trade or service (plumber, builder, salon, accountant) | .co.uk | All your customers are in the UK, and you want Google and locals to know it |
| UK-only online shop | .co.uk | Prices in pounds, UK delivery, UK buyers |
| Online shop shipping abroad | .com | One domain can serve several countries |
| Tours or services sold to overseas visitors | .com | Your buyers search from outside the UK |
| The .co.uk you want is taken | .com or .uk, if free | Don’t settle for an awkward name just to get .co.uk |
| Already trading on a .com that customers know | Keep the .com | Add local signals instead of moving |
| Starting out and both are free | Register both, use .co.uk if you serve the UK | Protects your name for little extra cost |
| Someone else owns the .com of your name | .co.uk is fine | Nominet says the same name under different endings is “generally not problematic” |
That last row comes from Nominet’s own FAQ, which points out that the same name can be registered by different people under .co.uk, .uk or .com (Nominet reserved .UK rights FAQs). Just make sure you’re not using someone else’s trade mark.
Starting a new website? I build bespoke WordPress websites for small businesses from £1,500, and I set up the domain, redirects, email records and Search Console properly from day one, in your name. Small sites take 10 to 15 working days once the content is in. See my prices or book a free consultation.
What about .uk and .co domains?
A .uk domain is a real, shorter UK domain run by Nominet, and it’s a good option if the .co.uk is taken. A .co domain is not a UK domain at all, and I’d avoid it for a UK business.
Nominet says .uk domains “are intended to be used for those who wish to be associated with the United Kingdom” (Nominet .UK Registration Policy). Owning a .co.uk no longer gives you any right to the matching .uk. Only .co.uk names registered before 28 October 2013 had reserved rights, and those expired on 25 June 2019 (Nominet).
As for .co, Google lists it among the country codes it treats as generic, like .com, because “users and website owners frequently see these more generic than country-targeted” (Google Search Central). So it gives you no UK signal, and plenty of people will type .com or .co.uk out of habit and land on someone else’s site.
Should I register both .co.uk and .com?
If both are free and the cost is small, yes: register both, use one as your main address and permanently redirect the other. That stops someone else grabbing the other version and catches customers who type the wrong ending. What you shouldn’t do is run the same website on both. Google will just pick one version to show, and you’ll split your links between two addresses.
Here’s how I’d set your domain up, step by step:
- Check both endings are free with a registrar, and look at the renewal price, not just the first-year offer.
- Register them in your business’s name. Nominet says the registrant is “legally responsible for the domain name” and must give complete, accurate details (Nominet domain policies). It checks names and addresses against sources such as Royal Mail, the electoral roll and Companies House (The UK Domain).
- Pick one main domain for your website, your email and your marketing.
- Set up a permanent (301) redirect from the other domain, including its www version, to your main one. Google recommends server-side permanent redirects for this (Google: redirects).
- Use the main domain everywhere else: your Google Business Profile, social profiles, invoices and van signs.
- Add the main domain to Google Search Console so you can see how it’s doing. My guide to what Google Search Console is explains the setup.
- Turn on auto-renew on both domains and keep the renewal email address one you actually read.
Can I switch from .com to .co.uk later?
Yes, you can switch later without losing your Google rankings for good, as long as you redirect every old address to its new one. Google calls this a site move and says permanent redirects “don’t cause a loss in PageRank” (Google: site moves).
Google’s advice is to redirect each old page to its matching new page, submit your new sitemap in Search Console, and keep the redirects “for as long as possible, generally at least 1 year”. Give Google time to catch up, and update your Business Profile, email and printed material on the same day. It’s very doable, but it’s one more reason to choose carefully at the start.
What would I do for a UK small business?
For a business whose customers are in the UK, I’d go with .co.uk, and if the .com is free and cheap, I’d register that too and redirect it. My own site runs on .co.uk because my clients are UK businesses. If the .co.uk of your name is taken, I’d rather tweak the name (add your town or trade) than settle for an ending your customers won’t remember.
The bigger risk isn’t .co.uk versus .com. It’s a domain registered in a web designer’s or an ex-employee’s name, so the business doesn’t control its own address. That’s why it’s one of my questions to ask a web designer before you hire anyone. If you’re budgeting for the whole thing, my breakdown of how much a WordPress website costs includes domains and hosting.
Can you do all this yourself? Absolutely. Registering a domain is quick. Where it’s worth getting help is the setup around it: redirects, email records, Search Console and a website that actually brings in enquiries. That’s where my SEO work and web design come in.
.co.uk or .com: frequently asked questions
Is .co.uk or .com better for a UK business?
For most UK small businesses, .co.uk is the better fit because it tells customers and Google that you serve the UK. Choose .com if you sell in several countries or your brand already lives there.
Does Google rank .co.uk higher than .com in the UK?
Not by itself. Google treats .co.uk as a strong signal that a site is meant for UK users, but your content, links and local signals such as your Business Profile matter far more.
What do I need to register a .co.uk domain?
Nominet’s policy says .co.uk is intended for commercial use, and every registrant must give complete, accurate details. Nominet checks names and addresses against sources such as Royal Mail, the electoral roll and Companies House.
Is .uk a real domain?
Yes. Nominet runs .uk alongside .co.uk, and it is intended for people and businesses who wish to be associated with the UK. It is a good alternative if the .co.uk you want is taken.
Can I trust a .co website?
.co is a country code, but Google treats it as a generic domain like .com, so it is not a sign that a business is in the UK. Judge the site on its contact details and reviews, not its ending.
Should my business email use .co.uk or .com?
Use the same domain as your main website, so customers see one consistent name everywhere. If you own both, you can forward email sent to the spare domain to the same inbox.
Will I lose my Google rankings if I change domain later?
Not for good, if you 301 redirect every old page to its new address. Google says permanent redirects don’t cause a loss in PageRank and recommends keeping them for at least a year.
Want a website that’s set up right from the start?
Now you know whether .co.uk or .com suits your business. If you’d like someone to handle the website side, from the domain and redirects to a fast, bespoke WordPress site built to win local customers, tell me about your business and I’ll give you an honest answer, even if it’s “you can do this yourself”. I’m a freelance web designer and SEO consultant in Clapham, London.
Book a free consultation, or call or WhatsApp me on 07404 145722. Your domain, your name, your website.
Freelance web designer and SEO in Clapham, London, and two-time Prestige Awards Web Designer of the Year. I design, build and rank websites for small businesses. More about me
