What is the best antivirus software in the UK?

What the NCSC actually advises

The UK’s National Cyber Security Centre keeps its consumer antivirus guidance refreshingly sober. Its key points: antivirus is often already included free in your operating system, and making sure that built-in protection is switched on makes you instantly safer. Phones and tablets are a separate case — provided you install apps only from official stores like Google Play and the App Store, the NCSC says smartphones do not need separate antivirus.

Two more NCSC points save real money and trouble. First, the trial antivirus preinstalled on many new laptops expires — a lapsed trial gives you a false sense of security. Second, the NCSC warns that a separate antivirus product won’t always work alongside the built-in protection and could even stop it working completely — so run one product, deliberately chosen.

When a paid suite earns its place

Built-in protection covers one device’s core scanning. Paid suites justify themselves in specific, checkable situations: you protect several devices across Windows, macOS and Android under one subscription; you want web protection in every browser✕A browser is the program you use to open websites and surf the internet — such as Chrome, Firefox, or Safari.More in the glossary → rather than one; you would otherwise pay separately for a VPN, password manager or parental controls; or you value identity-monitoring alerts. Which vendors do these things well is a question for the major products’ track recordsGuideWhat are the 7 examples of antivirus software?Seven examples of antivirus software — from Microsoft Defender to Bitdefender, Norton, ESET, Avira, McAfee and Malwarebytes — and what sets each apart.Read guide → and independent lab results — and understanding how the detection layers workGuideHow does antivirus software detect malware?Antivirus software detects malware with signatures, heuristics, behavior analysis and cloud ML. Here is how each layer works and why all are needed.Read guide → makes the lab scores easier to read.

UK-specific criteria that actually matter

The renewal price in pounds. UK pricing follows the industry pattern: a discounted first year, then a substantially higher renewal — with auto-renewal typically on by default. Compare products on their GBP renewal price and check how easily renewal can be switched off and refunded; the first-year figure is marketing.

Support you can reach. UK-hours phone or chat support is worth something when a subscription or false alarm goes wrong — check what each vendor offers before buying rather than after.

Family setups. Multi-device households are where per-device pricing (ESET’s model) and unlimited-device pricing (McAfee’s model) or generous bundles (Norton 360) diverge most sharply in cost per year.

The Kaspersky question in the UK

Kaspersky sits in a category of its own for UK buyers. Since 2017, NCSC advice has barred Russia-based antivirus from UK government systems where Russian state access would pose a national-security risk. After the 2022 invasion of Ukraine, the NCSC advised public-sector bodies, critical infrastructure and high-profile organizations to reconsider any Russian-supplied technology in their supply chain — while explicitly telling individual home users that their Kaspersky software remained safe to use, with the caveat that sanctions could one day disrupt updates.

Whether you want a Moscow-based vendor with deep system access is a personal risk judgment — the same jurisdiction logic that speaks for EU or US-based vendors elsewhere.

Frequently asked questions

Is Kaspersky banned in the UK?

No. The UK restricts Russia-based antivirus on government and national-security-relevant systems, and advises critical sectors to reconsider Russian suppliers, but there is no ban on consumers buying or using Kaspersky — in contrast to the US, which prohibited sales and updates in 2024.

Is Microsoft Defender enough in the UK?

For a single Windows PC used carefully, often yes — that aligns with the NCSC’s own guidance. Paid suites add cross-platform coverage, browser-independent web protection and extras like VPNs. If you would not use those extras, Defender plus automatic updates✕Automatic updates install new versions of WordPress, themes and plugins on their own. They close security holes without you having to keep watch.More in the glossary → is a defensible choice.

Do I need antivirus on my phone in the UK?

According to the NCSC, not if you stick to official app stores and keep the operating system updated. Android users who sideload apps are the exception — that is where mobile protection earns its keep.

Is free antivirus good enough in the UK?

Free tiers from reputable vendors and the built-in Defender cover core protection well — the engines usually match the paid versions. You give up extras (VPN, password manager, support priority) and accept upgrade prompts. What matters is choosing an established vendor, not an unknown free app.

So which one should you buy?

Start from your device list and the extras you would pay for anyway, then let independent test results — not adverts — pick the shortlist. Our antivirus comparison ranks the leading products on protection, system load, features and what they really cost at renewal.