NOOK HD and HD+ owners in the territory can now download a host of movies and television shows to their devices.
The service is the first of its kind in Britain to offer UltraViolet compatibility, giving customers access to digital copies of content they have purchased on a physical disc.
Content from BBC Worldwide, HBO, NBCUniversal, Sony Pictures Home Entertainment, STARZ and Warner Bros. Entertainment is available at launch, with more partners to be announced in the future.
Videos can be downloaded in either standard or high-definition format and are stored in the user's NOOK Cloud account. The upcoming NOOK Video apps will enable playback on other devices.
Barnes & Noble launched the NOOK HD and HD+ tablets in Britain last month, priced at £159 and £229 respectively.