
Best Cheap 4K TVs in the UK Under £400 (2025 Guide)
By cheaptvdeals.co.uk • 4 April 2025 • 👁 11 readers
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Best Cheap 4K TVs in the UK Under £400 (2025 Guide)
Introduction
Looking for a high-quality 4K television without overspending? You’re not alone. As prices fall and features improve, 4K TVs under £400 are no longer cheap in quality—just in price. This guide will help you cut through marketing fluff and choose the best 4K TV deals in the UK based on real performance, features, and everyday value.
Whether you're setting up a new home cinema, upgrading from an old HD set, or buying a second screen for your bedroom, this article walks you through the top models under £400 and what to look for when buying a budget 4K TV.
Why 4K Matters (Even on a Budget)
4K, or Ultra HD (UHD), delivers four times the resolution of Full HD. That means sharper images, better detail, and a more immersive viewing experience. Luckily, 4K is now the standard for streaming, gaming, and even Freeview-compatible Smart TVs in 2025.
Budget doesn't mean basic anymore. Even sub-£400 TVs now include:
- Smart TV functionality (Netflix, Prime, YouTube, Disney+)
- HDR support (HDR10, Dolby Vision)
- Solid refresh rates (ideal for sports & gaming)
- Upscaling for older 1080p or 720p content
Quick Summary: Top Budget 4K TVs Under £400 (May 2025)
TV Model | Screen Size | Key Features | Avg Price |
---|---|---|---|
Hisense A6K | 55" | Dolby Vision, DTS, VIDAA OS | £329 |
TCL RP630K Roku TV | 50" | Roku OS, HDR10+, Auto Low Latency | £349 |
LG UR78 Series | 43" | WebOS, AI 4K Upscaling | £379 |
Samsung TU7020 Crystal | 43" | HDR10+, Crystal Processor 4K | £399 |
JVC Fire TV Edition | 50" | Fire OS, Alexa, HDR10 | £329 |
🥇 1. Hisense A6K – Best Big Screen TV Under £350
If you want size and value, the Hisense A6K 55" delivers. It's equipped with Dolby Vision, DTS Virtual:X, and a surprisingly responsive VIDAA OS.
Pros:
- Huge screen for under £330
- Crisp 4K picture with Dolby Vision
- Built-in Alexa and smart assistant support
Cons:
- Mediocre viewing angles
- Remote is basic
Ideal for: Movie nights, sports fans, and large living rooms
🧠 2. TCL RP630K – Smartest TV OS at This Price
TCL’s Roku integration makes this 4K TV incredibly easy to use. Roku has thousands of apps, excellent performance, and auto-adjusts image quality via HDR10+.
Pros:
- Roku OS is unmatched in speed & usability
- HDR10+ for richer colours
- Auto low latency for smoother gaming
Cons:
- No Dolby Vision
- Speakers are underpowered
Great for: Streaming addicts, casual gamers, and minimalist users
👉 See more Roku TVs under £400
👨👩👧👦 3. LG UR78 – Best for Families & Daily Viewing
This 43-inch LG packs a punch with WebOS, ThinQ voice commands, and excellent AI upscaling. Great for multitasking households.
Pros:
- Great build and longevity
- WebOS is simple for kids and elderly alike
- Excellent image processing
Cons:
- Not the best sound out of the box
- No HDMI 2.1
Perfect for: Everyday viewing, living rooms, and family use
🎨 4. Samsung TU7020 – Most Stylish on a Budget
Samsung’s Crystal UHD range delivers a premium aesthetic with a refined panel and great upscaling. While lacking some high-end features, it wins on polish.
Pros:
- Beautiful image clarity
- Brand reliability
- Good motion smoothing for sports
Cons:
- No Dolby Vision
- Basic remote & UI
Best for: Modern homes that care about aesthetics
🔥 5. JVC Fire TV Edition – Best Alexa Integration
If you're in the Amazon ecosystem, the JVC Fire TV edition gives you seamless Alexa voice control, Prime Video integration, and solid panel quality.
Pros:
- Voice control via Alexa built-in
- Easy app access
- Responsive UI
Cons:
- Average contrast
- Clunky stand
Best for: Smart home users and Prime Video fans
📚 What to Look for in a Cheap 4K TV
- HDR Support: Look for HDR10 or Dolby Vision
- Smart Platform: Roku, WebOS, VIDAA, or Fire OS preferred
- HDMI Ports: Aim for 3+ if you use consoles, soundbars, or set-top boxes
- Audio: Budget TVs often need a soundbar for full cinematic experience
- Refresh Rate: 60Hz is fine; 120Hz is a bonus
🛒 Where to Buy Cheap 4K TVs in the UK
- Amazon UK – fast shipping, wide range, daily deals
- Currys – good for warranty and in-store pickup
- Argos – occasional price drops and bundles
- Very / AO / AppliancesDirect – often cheaper for less mainstream brands
📌 Final Thoughts: Should You Buy a £400 4K TV?
Yes—if you choose wisely.
TV tech has matured enough that you don’t need to spend £1000+ for great visuals. The models we listed punch above their price tag in terms of features, display quality, and usability. For most UK homes, a 43-55 inch 4K set from Hisense, TCL, or LG will be a huge upgrade from any 1080p model.
✅ TL;DR – Top 3 Budget 4K TV Picks:
- Hisense A6K (55") – Best size and Dolby Vision for under £350
- TCL Roku RP630K (50") – Most intuitive smart platform
- LG UR78 (43") – Best balance for families & daily use
💸 Want More UK TV Deals?
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