This is one of those questions where the technically correct answer and the practically sensible answer are slightly different. Let's go through both so you can make the right call for your business.
The Technical Reality
Your domain name and your web hosting are genuinely separate things. Your domain (yourcompany.co.uk) is registered with a domain registrar. Your hosting is provided by a hosting company. These two services don't have to come from the same provider. They communicate with each other through a system called DNS, which essentially tells your domain where your hosting server is located. This can be updated whenever needed, and switching either one independently is entirely possible.
So from a technical standpoint, you absolutely don't have to buy them from the same company. And in many cases, you're actually better off not doing so.
Why Separating Them Can Be Smarter
When you buy both your domain and your hosting from the same provider, you're consolidating control in one place. That's convenient until it isn't. If you ever become dissatisfied with your host and want to switch providers, having your domain registered there too adds friction to the process. Some providers make domain transfers deliberately awkward as a way of keeping customers.
There's also a pricing angle. Dedicated domain registrars like Namecheap typically offer more competitive, transparent domain pricing than hosting companies. Many hosting companies offer a "free domain for the first year" and then charge inflated renewal rates in subsequent years. The renewal rate on a domain through a hosting company can be £5 to £10 more per year than buying it directly from a specialist registrar.
Keeping your domain with a registrar you trust and your hosting with a host you're satisfied with means you have genuine flexibility to switch either one without it complicating the other.
Why Keeping Them Together Makes Life Easier
That said, for a lot of outdoor living and paving business owners who aren't deeply technical and don't want to think about DNS settings and registrar transfers, keeping both in one place is genuinely simpler.
When everything is under one login, there's less to manage. If something goes wrong, you're only calling one support line. Setup is faster because your host typically handles the domain pointing automatically when you purchase both together. For someone who wants to get their website live and then focus on running their business rather than managing technical infrastructure, this simplicity has real value.
If you're working with a web developer or agency to build your site, they can handle the domain and DNS setup regardless of where things are registered. A good developer will simply ask for access to your domain's DNS settings and make the necessary changes. You don't need to have things in the same place for this to work smoothly.
The Recommendation
The cleanest setup for a paving or outdoor living business is this: register your domain with a reputable, dedicated domain registrar where pricing is transparent and transfers are straightforward. Keep your hosting with a provider chosen for their performance, reliability, and UK server presence. Have your developer or developer connect the two.
If you've already bought both from the same host and everything is working fine, there's no urgent reason to separate them. It's a consideration for when you're setting things up fresh or when you're switching hosts and have the opportunity to reorganise.
The most important thing is not where you buy them from, but the quality of each. A great domain registrar and a great host that happen to be different companies is better than a mediocre provider that offers both as a bundle.
Your domain name is the address your customers will know you by for years. Your hosting is what keeps your website running reliably every day. Both deserve to be chosen on their own merits, not just because they're conveniently sold together.