Everyone warns you that the hard part of a new blog is keeping it going. Nobody warns you about the stretch you’ll spend at a registrar’s search box with a name you love, watching it come back taken in one ending and free in another, trying to work out whether that difference matters.

It does matter. Just less than it feels like when you’re stuck on it.

This blog has run on a .co.uk for years and I’d make the same call again, but my situation isn’t automatically yours. So here is what changes depending on the ending you pick, roughly in the order I’d think about it when choosing a blog domain.

Where you buy one, and what you’re actually buying

Domains come from registrars. You type your name into a search box, it tells you what’s free, you pay for a period of time and it’s yours to point wherever you like. one.com is one of the places you can buy domain names in either ending.

Two things worth knowing before you hand over a card. The first is that you are not buying the name outright. Registration gives you an exclusive right to use it for the period you’ve paid for, and that right ends the day you stop paying. The second is that the first-year price is almost never the real price. Introductory rates on popular endings can sit well below what year two costs, and for .com and other generic endings, ICANN requires registrars to publish their renewal, post-expiration renewal and restoration fees at the point you register, precisely so you can check before you commit. Find that number before you pay the first one.

The ending tells Google who you’re for

This is the part with an actual answer rather than a vibe. Google’s own documentation on multi-regional sites says a country-code ending like .co.uk gives a strong signal to both people and search engines that a site is meant for that country. Useful. But the same page is honest about the catch: geotargeting can lift your rankings in the country you’ve aimed at, and it does that at the expense of results elsewhere.

Which means the useful question is not which ending wins but who you want walking through the door.

If you’re starting a lifestyle blog about Tynemouth breakfast spots, Northumberland beaches and where to park in Morpeth, the reader you want is already in the UK and there is no audience you’re giving up. If you’re writing about long-haul travel, or you fancy the idea of an American reader finding your Rome rooftop bar guide, .com keeps the door open wider. One caveat if you’ve been eyeing something cuter: Google treats a handful of country codes, including .io, .me, .tv and .co, as generic rather than country-specific, so a .co won’t quietly signal Colombia to anyone.

Your first choice is probably gone

Availability is the reason most of these decisions get made, and the numbers explain why. Verisign’s Domain Name Industry Brief put the .com base at 163.6 million registrations at the end of March 2026. Nominet, which runs the UK registry, says more than 10 million domains sit under the whole .UK family, with over 120,000 new .UK names registered each month through a network of more than 2,000 registrars.

Fewer names taken means yours is likelier to be free in .co.uk, and for a lot of people that alone settles it.

What I’d resist is the panic move. When the .com goes, the instinct is to bolt something on: a hyphen, a “the”, a number, “blog” on the end. Hyphens are the worst of these because they vanish the moment anyone says the address out loud, and “blog” ages badly the day you start doing anything that isn’t blogging.

Say it out loud before you buy it

It’s easy to choose a name entirely on a screen, and if you’re starting a lifestyle blog you’ll end up saying the address aloud far more than you expect. So here’s the test I’d run. Say it down the phone to your mum, then picture it printed on a card that someone reads at a market stall.

A name can look completely fine and still fall apart out loud. Two words that collide on a double letter where they join, a word with two accepted spellings, anything that needs “no, with a hyphen in it” said after it. You pay for those every time somebody tries to pass your blog on to a friend.

This is also the one bit of building a blog brand that’s expensive to reverse. You can rewrite a tagline on a Tuesday and redesign a header over a weekend. Moving a domain means redirects, rebuilt links, updated bios everywhere you post and a stretch where some people simply can’t find you.

The cost that turns up in year two

The sums are small enough that cost rarely decides this, which is why the renewal date deserves more attention than the price does. Nominet’s own renewals procedure gives an expired .uk a 90 day window: 30 days when it can still be renewed as normal, then 60 days suspended, with a cancellation warning sent on day 83. The bit worth knowing is that the suspension at day 30 is when the site and the email stop working. You still have two months to put it right. The catch is that the first sign of trouble is a dead site, not an unread reminder, and the cause is usually dull: an old email address on the account and a card that no longer exists. That’s worth caring about because the domain outlasts everything else.

A round-up of breakfast spots in Newcastle published back in October 2020 is still one of the most read things here. Themes have changed since and platforms have come and gone. The address is the bit that carried it all forward, and it’s the same address brands use when they want to work with me.

So which one, then?

If the blog is about Britain and your readers are here, take the .co.uk and stop agonising. It reads as British and it’s likelier to be free, and Google will take the hint about who you’re for. If you want room to grow into something international, or your subject has no postcode attached to it, take the .com.

If the budget stretches, take both and point one at the other. Two registrations are cheap insurance against the sinking feeling of watching someone else pick up the twin of your name later. And if none of that settles it, the order of priority when choosing a blog domain is that the name matters more than the ending and consistency matters more than either. The part of building a blog brand that lasts is the address staying put while everything else around it changes. Nobody who picked the cleverest extension is further ahead than the person who picked a plain one and stayed. Choose the one you’ll still be happy typing in a few years, put the renewal in the calendar while you’re thinking about it, and go and write something.