Best 4K TV Under £400 UK
You no longer need to spend £600+ for a genuinely good 4K TV in the UK. Brands like Hisense, TCL, and Samsung now pack QLED panels, Dolby Vision, and proper smart platforms into sets priced well under £400. The sweet spot at this budget is a 50-55 inch screen — large enough for most UK living rooms without overwhelming the space.
What to Look For
- 1At this price, 50-55 inch is the sweet spot — 43 inch models often cut corners on panel quality, while 65 inch sets under £400 sacrifice HDR brightness.
- 2Prioritise Dolby Vision and HDR10+ support over raw peak brightness — these formats do the heavy lifting in darker UK viewing conditions.
- 3Check the smart platform: Google TV and Roku give you full UK catch-up app support (BBC iPlayer, ITVX, Channel 4, My5). Some budget brands use proprietary systems that lack key apps.
- 4HDMI 2.1 matters if you own a PS5 or Xbox Series X — look for at least one HDMI 2.1 port with 4K/120Hz support.
- 5Wall-mounting is common in UK homes — confirm VESA mount compatibility and check the bracket is included or note the size needed (usually 200x200 or 300x300 at this size).
Our Top Picks
Hisense 55A6N 55-Inch 4K UHD Smart TV
Pros
- Dolby Vision and HDR10+ for excellent HDR across all content
- VIDAA smart platform with all UK catch-up apps built in
- Game Mode with ALLM for responsive console gaming
- Usually available well under £350
Cons
- No HDMI 2.1 — limited to 4K/60Hz
- Built-in speakers are adequate but lack bass depth
Outstanding value 55-inch 4K with Dolby Vision, DTS Virtual:X, and full VIDAA smart platform at a price that undercuts most rivals.
Samsung Crystal UHD CU7100 55-Inch 4K Smart TV
Pros
- Tizen OS is fast and has every UK streaming app
- Crystal Processor 4K handles upscaling well
- Samsung's 2-year UK warranty with local service centres
- Clean, slim design suits wall-mounting
Cons
- No Dolby Vision — Samsung uses HDR10+ only
- Peak brightness lower than QLED Samsung models
Samsung's entry-level 4K delivers the polished Tizen smart platform and reliable picture quality backed by strong UK warranty support.
TCL 55C645K 55-Inch QLED 4K Smart TV
Pros
- QLED panel delivers richer colours than standard LED rivals
- Google TV with Chromecast built-in and full UK app library
- Dolby Vision and Dolby Atmos support
- Game Master mode with ALLM and VRR
Cons
- TCL brand less established in UK after-sales support
- Viewing angles narrower than IPS-based competitors
A genuine QLED panel at a budget price, with Google TV providing the best smart platform in this bracket.
LG 50UR80006LJ 50-Inch 4K Smart TV
Pros
- webOS is intuitive with excellent UK app support including NOW TV
- IPS panel offers wider viewing angles than VA rivals
- ThinQ AI voice control works with Alexa and Google Assistant
- Magic Remote included for point-and-click navigation
Cons
- IPS panel means lower contrast ratio in dark scenes
- 50-inch only at this price — 55-inch model exceeds £400
LG's webOS platform and wide viewing angles make this ideal for family rooms where everyone sits at different positions.
Hisense 50E7KQTUK 50-Inch QLED 4K Smart TV
Pros
- QLED panel with Quantum Dot colour at under £350
- Dolby Vision, Dolby Atmos, and DTS Virtual:X
- Game Mode Pro with ALLM for PS5 and Xbox
- VIDAA platform with Freeview Play integration
Cons
- 50-inch screen may feel small in larger living rooms
- No HDMI 2.1 for 4K/120Hz gaming
Compact 50-inch QLED with Dolby Vision and a game mode that punches above its weight for console gamers on a budget.
Editor's Note
In the UK under-£400 bracket, Hisense and TCL offer the strongest price-to-performance ratio, regularly undercutting Samsung and LG by £50-£100 for equivalent specs. Amazon Prime Day (July) and Black Friday are the best times to buy — last year saw 55-inch QLEDs drop to £280. For a typically dimmer British living room, VA panel TVs (used by Samsung and Hisense) deliver better contrast than IPS alternatives.