The short answer: yes, and it's no longer optional
If you're asking "do I need an SSL certificate" in 2024, the honest answer is that you needed one years ago and you definitely need one now. An SSL certificate is what turns the "http" in your web address into "https" and shows the little padlock in the browser bar. Without it, modern browsers actively warn visitors that your site is "Not secure".
That warning appears before anyone reads a word of your carefully written homepage. For a business trying to win trust, a red "Not secure" flag is about the worst first impression you can make. The good news is that fixing it is usually quick and, on most modern hosting, completely free.
So this isn't really a debate about whether you need one. It's a quick guide to what an SSL certificate actually does, why it still matters for trust and rankings, and how to get HTTPS on your site without spending a penny.
What an SSL certificate actually does
SSL (more accurately TLS, though everyone still says SSL) encrypts the connection between your visitor's browser and your website's server. Without it, data travels in plain text that anyone on the same network, a café's public WiFi, say, could potentially read. With it, that data is scrambled so only the intended server can unscramble it.
In practical terms, it protects anything a visitor types into your site: contact form details, login passwords, and especially payment information. It also verifies that the site is genuinely yours and hasn't been impersonated, which matters more than ever with phishing on the rise.
The padlock icon is the browser's way of telling the visitor "this connection is encrypted and the site is who it claims to be". It's a small symbol that does a surprising amount of quiet reassurance work.
Why the padlock still matters for trust
People may not know what SSL stands for, but they've been trained to look for the padlock and to feel uneasy when a browser shouts "Not secure". On a shopping site, that warning kills conversions. On a service business site, it makes a potential client quietly wonder whether you're sloppy with everything else, too.
Trust online is fragile and built from dozens of small signals: a professional design, real reviews, a proper domain email, and yes, a secure connection. HTTPS is one of the cheapest and easiest of those signals to get right, which makes skipping it especially costly.
If you take any payments or collect any personal data, the stakes are higher still. Data protection expectations under UK GDPR mean handling personal information responsibly, and transmitting it over an unencrypted connection is hard to defend if anything ever goes wrong.
The SEO angle: HTTPS is a ranking signal
Google confirmed years ago that HTTPS is a ranking factor. It's a lightweight one, you won't leap from page five to page one just by adding a certificate, but in competitive local markets, small advantages add up. All else being equal, the secure site has the edge over the insecure one.
There's also an indirect SEO benefit. The "Not secure" warning increases the number of people who hit your site and immediately leave. High bounce rates and poor engagement send Google unhelpful signals about your site's quality, so an unsecured site can underperform for reasons beyond the certificate itself.
Put simply: HTTPS won't single-handedly win you rankings, but lacking it can quietly hold you back, and there's no upside to going without.
How to get an SSL certificate for free
The biggest myth is that SSL certificates are expensive. For most small business websites, you can get one free. Let's Encrypt, a non-profit certificate authority, issues free certificates trusted by every major browser, and the vast majority of hosting providers now bundle these in at no extra cost.
If you're on a modern host such as Hostinger, SiteGround, Cloudflare or similar, there's usually a one-click toggle in your hosting control panel to enable free SSL. Many hosts even switch it on automatically when you set up a site. It often takes minutes to provision.
Here's the typical process from start to finish:
- check_circleLog into your hosting control panel and find the SSL/TLS section
- check_circleEnable the free Let's Encrypt certificate for your domain
- check_circleWait a few minutes for it to provision and activate
- check_circleSet your site to force HTTPS so visitors always land on the secure version
- check_circleUpdate any hard-coded "http" links and check images still load
When you might pay for a certificate instead
Free Let's Encrypt certificates are perfectly adequate for the overwhelming majority of business websites, including ecommerce. They encrypt the connection exactly as well as a paid one. So don't let anyone pressure you into buying an expensive certificate "for security", the encryption strength is identical.
Paid certificates do exist for specific cases. Organisation Validation (OV) and Extended Validation (EV) certificates involve extra vetting of your company's identity, which large enterprises and some financial institutions choose for added assurance. Wildcard certificates covering unlimited subdomains can also be more convenient at scale.
For a typical UK small business, none of this is necessary. A free certificate from your host does the job. If a salesperson tells you otherwise, ask them to explain exactly what the paid version protects that the free one doesn't, the honest answer is usually "not much for your situation".
Don't break your site when you switch
Adding a certificate is easy; migrating cleanly takes a little care. The classic mistake is enabling HTTPS but leaving "mixed content", where the page loads over HTTPS but some images, scripts or stylesheets still load over the old http. Browsers flag this and the padlock disappears, defeating the point.
After switching, set up a permanent (301) redirect from http to https so old links and search results point to the secure version. Then update your sitemap, and in Google Search Console, make sure the https version of your site is the one being tracked.
Run through your key pages on mobile and desktop afterwards to confirm everything loads cleanly with the padlock showing. A few minutes of checking saves you from a half-secured site that looks broken to both visitors and search engines.
The bottom line for your business
An SSL certificate is now a baseline requirement, like having a mobile-friendly site or a real email address on your own domain. It protects your visitors' data, removes the off-putting "Not secure" warning, gives you a small SEO nudge, and on most hosting it costs nothing and takes minutes.
If your site is still running on plain http, treat fixing it as a five-minute priority rather than a someday task. There's no scenario in which staying unencrypted helps you, and several in which it quietly costs you trust, conversions and a sliver of ranking.
Frequently asked questions
Is a free SSL certificate as secure as a paid one?expand_more
Yes. Free Let's Encrypt certificates use the same encryption standards as paid certificates, so the connection is just as secure. The difference with expensive Organisation or Extended Validation certificates is extra vetting of your company's identity, which most small businesses don't need. For a typical website, including online shops, a free certificate from your host is entirely sufficient.
What happens if I don't have an SSL certificate?expand_more
Modern browsers display a "Not secure" warning in the address bar, which damages trust and drives visitors away before they read your content. Any data submitted through your site travels unencrypted, putting customer information at risk. You also miss out on a small Google ranking benefit. In short, going without costs you trust, conversions and SEO with no upside.
How do I know if my website already has SSL?expand_more
Look at your address bar. If your web address starts with "https" and shows a padlock icon, you have a working certificate. If it says "http" or the browser displays "Not secure", you don't, or it isn't configured correctly. You can also click the padlock to see certificate details and its expiry date.
Will adding HTTPS affect my Google rankings?expand_more
Positively, though modestly. HTTPS is a confirmed Google ranking signal, so a secure site has a slight edge over an insecure one. You won't see a dramatic jump from the certificate alone, but combined with removing the off-putting "Not secure" warning that drives visitors away, the overall effect on your search performance is helpful rather than harmful.
Do SSL certificates expire and need renewing?expand_more
Yes. Free Let's Encrypt certificates last 90 days, and paid ones typically last a year. The good news is that almost all modern hosting renews free certificates automatically, so you never have to think about it. If you manage SSL manually, set a reminder before expiry, as a lapsed certificate triggers a scary browser warning that can frighten off visitors.