4K Ultra HD
4K Ultra HD video quality
What is 4K Ultra HD?
4K (also called Ultra HD or UHD) refers to a screen resolution of 3840 x 2160 pixels — that’s 4 times the detail of Full HD (1080p). It means sharper images, more detail, and a better viewing experience — especially on larger TVs.
Why should you care?
- Sharper images — especially evident on TVs 50” or bigger
- More detail in textures, faces, and scenery
- Better colour and contrast when combined with HDR
What you'll need to enjoy 4K
- A 4K TV or monitor with a native application or an external device that supports 4K. Though many computer monitors can now support 4K, it is rare for the computer applications on web-based versions of service to provide 4K support due to piracy concerns.
- An internet connection that supports at least 25Mbps. If you expect to be streaming to more than one TV at once, you'll have to factor that in to your connectivity requirements. You will also want a stable wifi or ethernet connection to your TV or device.
- A high speed HDMI cable (if using an external device rather than the TV's native app).
What to look out for when reviewing services
Content support
Whilst many service plans now support 4K, not all content is available in 4K. As a relatively recent format, not all content was filmed in or can be easily upscaled to 4K. Live events like sport has been especially slow to transition due to the cost in supporting the broadcast in 4k.
Likewise, due to licensing restrictions, services will sometimes not have the 4K version of content, despite it being available elsewhere.
Streaming Builder provides scores with justification on every feature provided by a service plan, including 4K, so that you can better understand the breadth of 4K content each service provides.
4K performance
The only requirement needed to fulfil the delivery of 4K is the resolution. Other qualitative aspects of the picture depends on how its delivered by the service.
Service Plans Offering 4K Ultra HD
BBC iPlayer
The BBC's free streaming service featuring live TV and on-demand content from all BBC channels.
Standard
Free access to all BBC iPlayer content including live TV, catch-up programmes, and exclusive online content. Requires a valid UK TV licence (£180.00 annually from 1 April 2026) for legal use.
YouTube
The world's largest video platform with user-generated content, music videos, live streams, and premium subscription options including YouTube Premium and YouTube Music.
YouTube
Ad-supported streaming with limited features. Access to most YouTube content with advertisements.
YouTube Student
Ad-free YouTube experience with background play, offline downloads, and YouTube Music Premium included. Eligible students only. Annual verification required via SheerID. Discount available for up to 4 years.
YouTube Premium Lite
Ad-free viewing on most non-music videos, with background play and offline downloads for most eligible content. Does not include ad-free YouTube Music, ad-free Shorts, or YouTube Music Premium. Ads still appear on music content, Shorts, and while browsing or searching.
YouTube Premium
Ad-free YouTube experience with background play, offline downloads, and YouTube Music Premium included. Individual plan available monthly or annually (save ~17% annually).
YouTube Family
Up to 6 family members in the same household with individual accounts, ad-free viewing, and YouTube Music Premium for everyone. No annual billing option available.
Plex
A streaming platform that allows users to organize and stream their personal media libraries, plus access to 50,000+ free movies and TV shows and 600+ free live TV channels with ad-supported content. Remote streaming of personal media now requires a paid subscription (Plex Pass or Remote Watch Pass).
Plex Pass
Hardware transcoding, Remote streaming of personal media, Live TV & DVR (antenna/tuner required), Offline downloads, Mobile sync, Skip Intro/Credits, Premium music features (Plexamp), Plex Home (share with up to 15 users), Server management via Plex Dash app. Note: Plex Pass does NOT remove ads from free ad-supported on-demand or Live TV content.
Amazon Prime Video
Included with Amazon Prime membership, featuring original series, movies, and exclusive content.
Prime Video
Full Amazon Prime membership including Prime Video streaming with limited ads on movies and TV shows, plus free delivery, Prime Music, Prime Reading, Amazon Photos storage, and exclusive member deals. 4K and HDR available on supported content and devices.
Apple TV
Add-onApple TV
Requires base plan
NOW
NOW is Sky's contract-free streaming service in the UK, offering flexible monthly memberships for Entertainment, Entertainment & HBO Max, Cinema, Sports, and Hayu. Boost and Ultra Boost add-ons are available for improved audio and video quality (Full HD or 4K Ultra HD with Dolby Atmos), ad-free on-demand streaming, and extra simultaneous streams.
NOW Ultra Boost Add-on
Add-onThe NOW Ultra Boost Add-on adds Ultra HD (4K) and Dolby Atmos support for select content, allows 3 simultaneour streams, and removes adverts for on-demand content.
Apple TV+
Apple TV is an all-original streaming service featuring hundreds of exclusive Apple Original shows and movies — thrilling dramas, epic sci-fi, heartwarming comedies and more — with new releases every week and no ads. One subscription includes access for up to six family members.
Apple TV
All-original, ad-free streaming in 4K HDR with Dolby Vision and Dolby Atmos. Includes Family Sharing for up to 6 members. Offline downloads supported. 7-day free trial available for new subscribers.
Paramount+
Paramount+ offers a wide range of movies, exclusive originals, hit series, and family content. Now with three subscription tiers in the UK: Basic (with ads), Standard, and Premium.
Paramount+ Premium
4K UHD, HDR10, Dolby Vision, Dolby Atmos, ad-free, 4 devices at a time, downloads. Annual plan saves approximately 26% vs monthly.
Disney+
The home of Disney, Pixar, Marvel, Star Wars, National Geographic, Hulu, and ESPN content. Stream thousands of hours of movies, series, documentaries, and live sports — including LaLiga, UEFA Women's Champions League, and ESPN programming — all in one app.
Disney+ Premium
Disney+ Premium offers ad-free streaming in up to 4K UHD with HDR, Dolby Vision, and Dolby Atmos audio where available. Stream on up to four devices simultaneously and download content to watch offline on up to 10 devices.
HBO Max
HBO Max is a premium streaming service from Warner Bros. Discovery that launched in the UK and Ireland on March 26, 2026. It brings together HBO originals, blockbuster Warner Bros. films, DC content, Max Originals, documentaries, and a wide range of TV series and movies — all in one place for the first time. In the UK, HBO Max is also the new streaming home of TNT Sports, offering live coverage of the Premier League, UEFA Champions League, UEFA Europa League, UEFA Conference League, FA Cup, Adobe Women's FA Cup, Gallagher Premiership Rugby, Premiership Women's Rugby, UFC, MotoGP, Grand Slam tennis (including Australian Open and Roland-Garros), Grand Tour cycling, LIV Golf, Snooker, Cricket, the Glasgow 2026 Commonwealth Games, and the Olympic Games from 2028. The service is available directly via hbomax.com and through launch partners Sky and Prime Video. It is also accessible via NOW, EE TV, and BT TV. The platform supports up to five personalised profiles, parental controls, and offline downloads on selected plans.
HBO Max Premium
Top-tier ad-free plan with the ultimate HBO Max experience. Stream on 4 devices simultaneously in 4K Ultra HD with Dolby Atmos (where available). Includes all HBO Max shows and movies on an ad-free basis, including films that first stream on the service following their theatrical release window. Up to 100 offline downloads included.
HBO Max Premium & TNT Sports
Stream on 4 devices (only 2 for sports. 4K UHD & Dolby Atmos as available. 100 downloads (limits apply). Football, rugby, tennis, and more.
Netflix
The world's leading streaming entertainment service with a vast library of original content and licensed movies and TV shows.
Netflix Premium
4K Ultra HD streaming on 4 devices simultaneously with HDR, Dolby Vision, Dolby Atmos audio, and ad-free viewing
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