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Looking for a top-quality 4K smart TV without breaking the bank? Whether you're binge-watching the latest Netflix series, gaming on next-gen consoles, or just want a crisp picture for everyday viewing, you don’t have to splash out over £400 to get a great experience.

We’ve rounded up the best smart TVs under £400 available in the UK, comparing real-world performance, features, and value. From household names like Samsung and LG to newer contenders like Hisense and TCL, here’s your guide to finding the perfect 4K smart TV for your budget.

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Hisense 55 Inch 4K Smart TV 55E6NTUK

Price: Approx. £319
Customer Rating: ★★★★☆ (4.3/5)

What we love:

Hisense consistently delivers excellent value for money, and the 55E6NTUK is no exception. With support for Dolby Vision and HDR10, it delivers sharp contrast and vibrant colour that far outperforms its price tag. The Ultra Dimming technology helps with deeper blacks, making it great for dark-room viewing. The VIDAA OS is responsive, customisable, and gets you into apps quickly, although it’s a little lighter on UK-specific services. If you’re after high-end picture performance on a tight budget, this is a standout pick.

 

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TCL 55PF650K 55-inch 4K Ultra HD Smart TV

Price: Approx. £369
Customer Rating: ★★★★☆ (4.2/5)

What we love:

At this price point, the TCL 55PF650K is an absolute gem. The Google TV platform gives you a modern, highly responsive interface with unmatched app availability—all the UK’s major streaming services are here, and voice search with Google Assistant is smooth and accurate. The Dynamic Colour Enhancement delivers vibrant colours, especially in bright content like nature docs and sports. Plus, it’s surprisingly good for gaming thanks to low input lag. A true budget hero.

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Amazon Fire TV 55" 4-Series 4K UHD

Price: Approx. £339
Customer Rating: ★★★★☆ (4.4/5)

What we love:

If you’re deep into the Amazon ecosystem, this TV feels like a natural fit. It comes with Alexa built-in, so you can search for shows, control smart home devices, or check the weather—hands-free. The Fire TV OS is lightning-fast, user-friendly, and particularly good at surfacing content you’ll actually want to watch. The HDR support boosts contrast in action-heavy scenes and brings out more detail in dark areas. It’s ideal for Prime Video fans, casual viewers, and smart home lovers.

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Samsung CU7020 Crystal UHD 4K 55" Smart TV

Price: Approx. £369
Customer Rating: ★★★★☆ (4.6/5)

What we love:

This Samsung model brings flagship-level polish to the under-£500 bracket. The Crystal Processor 4K upscales HD content beautifully, and PurColor tech makes colours look rich and balanced. It even includes HDR10+ support—rare at this price. You also get Object Tracking Sound Lite, a feature typically seen in more expensive TVs, which adds a sense of spatial depth to audio. Combine that with Tizen OS, one of the most complete smart platforms for UK viewers, and you've got a real winner.

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LG 50UT73006LA 50-Inch 4K UHD Smart TV

Price: Approx. £399
Customer Rating: ★★★★☆ (4.5/5)

What we love:

Don’t let the smaller screen size fool you—this LG TV delivers in every department. The AI Picture Pro and AI Sound Pro technologies adjust visuals and audio in real time based on what you’re watching. The result? Optimised scenes whether you're watching sport, films, or gaming. webOS 24 is clean and intuitive, giving you direct access to all the UK’s essential apps. It also works beautifully with smart assistants like Alexa and Google Assistant, making this a fantastic all-rounder for smart home integration.

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Panasonic TB-55W60AEY, W60 Series 55 inch 4K Smart TV

Price: Approx. £399
Customer Rating: ★★★★☆ (4.3/5)

What we love:

Panasonic's W60 series is built for natural picture reproduction. Its 4K Colour Engine prioritises accurate tones and impressive motion handling, which is ideal for fast-paced content like sport or action movies. While its smart platform is basic compared to competitors, it’s fast, clean, and refreshingly free of bloat. With HDR10 and a solid built-in surround mode, it's a great pick for families or anyone wanting a no-nonsense, dependable TV.

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Philips 55PUS7009 4K LED Smart TV - 55 Inch Display

Price: Approx. £348
Customer Rating: ★★★★☆ (4.4/5)

What we love:

Philips has quietly produced one of the most feature-rich TVs in this price range. With both Dolby Vision and HDR10+, you're covered no matter which format your content is in. The Pixel Precise Ultra HD engine ensures clarity and sharpness across all sources. Dolby Atmos gives you rich, cinematic sound that goes beyond typical budget TV audio. And thanks to Google TV, app support is vast, the interface is slick, and casting from your phone is a breeze.

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Our Top 2 Picks

1. Samsung CU7020 55” Crystal UHD Smart TV

For under £400, this Samsung brings the best blend of picture quality, smart features, and design. Its HDR10+, Crystal Processor, and sleek build make it feel far more expensive than it is. An easy top choice for anyone wanting premium features at a mid-range price.

2. TCL 55PF650K Google TV

If you're after maximum value and app flexibility, the TCL 55PF650K is unbeatable. It runs Google TV flawlessly, supports all UK apps, and delivers a solid 4K experience that’s perfect for streaming, gaming, or casual viewing.

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Final Thoughts:
From cinematic viewing to seamless streaming, these smart TVs under £400 show you don't need to spend a fortune to get an excellent screen. Whether you're a Netflix addict, sports fan, or weekend gamer, there’s a perfect match here waiting for you.