.co.uk or .com: which domain should a UK business choose?

TL;DR: Choosing between .co.uk or .com comes down to your customers. If you only serve UK customers, a .co.uk domain is a clear signal: Google says country domains tell users and search engines a site is meant for that country. If you sell abroad or plan to, .com is the global default. Where you can, register both, use one as your main site and redirect the other to it.

Key takeaways

• Choosing .co.uk or .com depends on your customers: .co.uk for UK customers, .com if you sell worldwide.
• Google says country domains such as .co.uk give a strong signal to users and search engines that a site is meant for that country.
• A .com site can still rank well in the UK; Google also uses local addresses, phone numbers, currency and your Business Profile as signals.
• Nominet looks after more than 10 million .UK domains; Verisign reported 166.6 million .com registrations at the end of June 2026.
• First-year offers are cheap, but renewals are what you pay every year after: check the renewal price before you buy.

.co.uk or .com: which should a UK business choose?

Choose .co.uk if your customers are in the UK, and .com if you sell to customers abroad or plan to. For a local business such as a café, salon, plumber or clinic, .co.uk is the natural fit. If both are available, register both, use one as your main website and redirect the other to it.

The choice between .co.uk or .com matters less than most people fear. Both are trusted, both work with email, and both can rank on Google in the UK. What matters more is that the name is short, easy to spell and matches your business name, and that you own it yourself.

This guide uses Google’s own documentation on multi-regional sites, Nominet’s information on the .UK registry and Verisign’s Domain Name Industry Brief, all checked on 14 October 2026.

	.co.uk	.com	.uk
What it says	A UK business	A business anywhere	A UK business
Google treats it as	Country domain for the UK	Generic, not tied to a country	Country domain for the UK
Best for	UK customers only	Selling abroad, or global brands	UK customers wanting a short name
Run by	Nominet	Verisign	Nominet

What is the difference between .co.uk and .com?

A .co.uk domain is part of the UK’s country code domain, run by Nominet, and Google treats it as aimed at the UK. A .com domain is a generic domain, run by Verisign, and is not tied to any country. Both work the same way technically: they point to a website and can carry email.

Nominet says it has run the UK’s national domain registry since 1996, looks after more than 10 million domains, and sees more than 120,000 new .UK domains registered each month through a network of over 2,000 registrars. The .UK family includes .uk on its own and third-level names such as .co.uk.

The .com domain is far bigger. Verisign’s Domain Name Industry Brief for the second quarter of 2026 reported 166.6 million .com registrations at the end of June 2026, and listed .uk as the sixth largest top-level domain in the world and the third largest country domain, after .cn and .de.

Does a .co.uk domain help you rank on Google in the UK?

It can help Google understand your audience. Google says country code domains such as .co.uk provide a strong signal to users and search engines that a site is explicitly intended for a certain country. But it is one signal among several, and a .com site with clear UK details can still rank well in UK searches.

Google’s documentation lists the signals it uses to work out a site’s target audience: the country domain, hreflang annotations, the server’s location, and other signals such as local addresses and phone numbers on the pages, local language and currency, links from other local sites, and your Business Profile. A .com domain does not stop you ranking in the UK; it simply leaves the other signals to do the work.

For a local business, those other signals are usually strong anyway: a UK address, an 01 or 07 phone number, prices in pounds and a verified Google Business Profile. That is why the choice between .co.uk or .com rarely makes or breaks local search. Our local SEO checklist covers the signals that matter more.

Is .co a good alternative if .co.uk is taken?

Usually not for a UK business. Google says it treats some country codes, including .co, .io, .me and .tv, as generic domains because people see them as generic. A .co domain is also easy to confuse with .com, so customers may type the wrong address and end up somewhere else.

If your name is taken in both .co.uk and .com, it is usually better to add a word to the name, such as your town or trade, than to move to an unusual ending. A clear name like bloomhairsouthsea.co.uk is easier for customers to remember and type correctly than a short name on an ending they do not expect.

Should you buy both .co.uk and .com?

If both are available, yes. Registering both stops anyone else using the other version of your name, and catches customers who guess the wrong ending. Choose one as your main website and permanently redirect the other to it, so all your visitors and search signals end up in one place.

A permanent redirect, often called a 301 redirect, sends anyone who types the second domain straight to the main one. Google’s guide to redirects and Google Search says that when people can reach your site through several addresses, it is a good idea to pick one as the preferred destination and redirect the others to it, and that permanent redirects show the new target in search results.

Do not run two copies of the same website on two domains. Google’s guidance on duplicate content across regional sites says to pick a preferred version and use canonical tags to point to it, which is more work than a simple redirect. One main domain, with the others redirecting to it, is simpler and cleaner.

How much does a .co.uk or .com domain cost?

A domain usually costs a few pounds to around twenty pounds a year, but first-year offers hide the real price. Check the renewal price before you buy, because that is what you pay every year after. Many registrars also require you to buy several years upfront to get the cheapest offer.

As an example, on 14 October 2026, 123 Reg advertised a .co.uk or .uk domain at £3.99 for the first year for new customers, with later years at its standard renewal rate, and a .com at £0.01 for the first year on a 3-year purchase, renewing at £18.99 a year. Both prices excluded VAT. Prices change often, so treat these as an illustration, not a quote.

Nominet says a .UK domain can be registered for between 1 and 10 years, and that if you do not renew it, it becomes available for anyone to register on a first come, first served basis. Turn on auto-renew and make sure the registrar has an email address you actually read.

How do you choose a good domain name?

Pick a domain name that matches your business name, is short, easy to spell when heard out loud, and has no hyphens or unusual spellings. Say it over the phone to a friend and see if they can type it correctly first time. If they cannot, customers will not either.

• Match your business name, so customers can guess it.
• Keep it short and easy to type on a phone.
• Avoid hyphens and numbers, which are easy to mishear.
• Add your town or trade if the plain name is taken.
• Check it is not someone else’s brand, to avoid disputes.
• Use it for email too, such as hello@yourbusiness.co.uk.

Email on your own domain looks more professional than a free email address and stays yours if you change provider. Most registrars and web hosts can set it up for a small monthly fee.

How do you check if a domain name is available?

Search for it on a registrar’s website or on Nominet’s consumer site, The UK Domain, which has a domain search tool and links to registrars who can sell you the name. Search for both the .co.uk and the .com at the same time, so you know your options before you choose.

Nominet’s guide to registering a .UK domain says the first step is to check the name is available, and recommends registering through a registrar. Most registrars also offer hosting and email, but Nominet points out you do not have to use them for those.

If the name you want is taken, look it up before giving up. A domain that shows no website may still be registered and renewed every year by someone who intends to use it. Nominet’s lookup tool shows which registrar holds a .UK domain and when it expires, though Nominet notes it may no longer publish the owner’s name and contact details.

What if someone has registered your business name?

If someone else holds the .co.uk or .com version of your name, you can try to buy it from them, choose a different name, or, if you have rights in the name such as a registered trade mark, use a formal dispute process. For .UK domains, that is Nominet’s Dispute Resolution Service.

Nominet’s domain disputes page says that to complain through the service, you need rights, such as a trade mark, in a name that is the same as or similar to the domain. Since 7 July 2026, new complaints are submitted through the World Intellectual Property Organization, which runs the service for Nominet. Where the owner responds, Nominet offers free mediation before an independent expert decides.

For .com domains, disputes go through a separate international process. In both cases, a dispute takes time and has no guaranteed outcome, so for most small businesses a slightly different name is the quicker route. This is also a good reason to register your domain early, before you print signs, vans or cards.

How do you register your domain, step by step?

Registering a domain takes about ten minutes. Pick the name, check both endings, buy from a registrar in your business’s name, turn on auto-renew, and point the domain at your website and email. Keep the login details somewhere safe, because you will need them every time you change website or email provider.

1. Choose the name and check the .co.uk and .com are both free.
2. Pick a registrar, comparing renewal prices, not just first-year offers.
3. Register in your business’s name, with an email address you check.
4. Turn on auto-renew and keep your payment card up to date.
5. Point the domain at your website host and set up business email.
6. Redirect the second domain to your main one if you bought both.
7. Add the website to your Google Business Profile, so customers can find it from Maps.

Google’s Business Profile guidelines say the website you add should represent your individual business location and be under the business’s control, so use your own domain rather than a social media page or a third-party listing.

Which ending suits which kind of business?

For most local businesses the choice is quick once you think about where customers live. A business that only serves people in and around one town is a natural .co.uk. A business that ships products abroad, or sells software or services online to customers anywhere, is usually better on .com.

Business	Suggested main domain	Why
Café, pub or restaurant	.co.uk	Customers are local and UK based
Hair or beauty salon	.co.uk	Bookings come from the local area
Plumber, electrician or builder	.co.uk	Works within a set service area
Online shop shipping across Europe	.com	Customers in several countries
Software or online service	.com	Sold to customers anywhere
Growing group with several sites	Both, one redirecting	Protects the brand as it grows

These are starting points. A local business that already owns a short, memorable .com does not need to switch; a UK online shop that only delivers in the UK can happily use .co.uk.

What are the most common domain mistakes?

The most common mistakes are letting someone else own the domain, buying on a cheap first-year price without checking renewals, missing a renewal email, picking a name that is hard to spell, and choosing an ending such as .co that customers confuse with .com. All of them are easy to avoid at the start.

• The designer owns it. If the domain name sits in someone else’s account, moving your site later becomes a negotiation.
• Only checking the first-year price. A domain name that renews at several times the offer price costs more over five years.
• Missing the renewal. An expired domain name takes your website and email down with it, and Nominet says lapsed .UK names can be registered by anyone.
• Hard to say, hard to spell. Hyphens, numbers and creative spellings lose customers who type what they heard.
• Buying the wrong ending. Google treats .co as generic, and customers may type .com instead.
• Buying dozens of endings. Two well-chosen domain names, redirected to one site, protect most small businesses; there is no need to own every variation.

Who should own your domain name?

You should. Register the domain in your business’s name, on an account you control, even if a web designer sets it up for you. If someone else owns the account, you may struggle to move your website or email later. Nominet’s lookup tool shows which registrar holds any .UK domain.

Nominet also says you do not have to host your website with the same company you registered your domain with. That means you can keep your domain at one registrar and move your website between hosts without changing your address.

Can you change from .com to .co.uk later?

Yes, but plan it carefully. Moving domains means setting up permanent redirects from every old page to its new address, updating your Google Business Profile, social profiles and email, and telling Google through Search Console. Done properly, customers barely notice; done badly, you can lose search visibility for weeks.

Because of that work, it is worth getting the choice right at the start. If you already have a working .com that customers know, there is usually no need to switch: register the .co.uk as well and redirect it to your existing site.

Based in Hampshire and would rather someone local did it? Our Portsmouth web designers meet you at your place, and you can open the sites we have built.

Frequently asked questions

Is .co.uk better than .com for SEO?

For UK customers, a .co.uk domain gives Google a clear country signal, which Google describes as strong. A .com can still rank well in the UK when the site shows a UK address, phone number, prices in pounds and has a Business Profile.

Do customers trust .co.uk or .com more?

Both are familiar and widely used in the UK. A .co.uk tells visitors at a glance that you are UK based, which suits a local business. A .com suits a business that sells abroad. The name itself matters more than the ending.

Should I use .uk instead of .co.uk?

A .uk domain is shorter and Google treats it as a UK country domain in the same way. The .co.uk ending is more familiar to most customers, so if you choose .uk, consider registering the .co.uk too and redirecting it.

What happens if my domain expires?

Nominet says that if you do not renew a .UK domain before it expires, it can become available for others to register on a first come, first served basis. Your website and email on that domain would stop working. Turn on auto-renew to avoid it.

Can I have my website and domain with different companies?

Yes. Nominet says you do not have to host your website with the company you registered your domain name with. You can point the domain at any web host.

Need a website on the right domain?

Choosing between .co.uk or .com is the first step; building a website that brings in enquiries is the next. Our website design service includes registering or connecting your domain in your own name, setting up redirects and business email. If you already have a site, our free website check shows what to fix first.