The platform will combine BritBox and ITV Hub on a range of different subscription tiers, some free and some paid for, and will debut ITV series up to nine months before they air on linear channels.
Read more: Which is the best streaming platform?
ITVX has pulled together an impressive line-up of stars for the 35 flagship shows that will launch the service this autumn, including Damian Lewis and Guy Pearce for an adaptation of the Ben Macintyre book A Spy Among Friends.
Lewis (Homeland, Wolf Hall) and Pearce (Mare of Easttown, Neighbours) star in the dramatisation of the true story about Nicholas Elliott and Kim Philby, two British spies and lifelong friends.
Philby was the most notorious British defector and Soviet double agent in history whose deeply personal betrayal, uncovered at the height of the Cold War, resulted in the gutting of British and American Intelligence.
ITVX viewers can also look forward to Without Sin, which stars Line of Duty's McClure as a grieving mother who starts to meet with the man in prison for her 14-year-old daughter's murder.
David Tennant (Doctor Who) stars as former Russian Federal Security Services and KGB officer Alexander Litvinenko in Litvinenko alongside Mark Bonnar, tracking the Met Police investigation into his slow death from polonium poisoning in November 2006 which began while he was still alive.
Other highlights include high-stakes family drama Riches, teen mental health drama Tell Me Everything, Plebs: Barbarian Invasion which is a feature-length version of the sitcom, Stephen Fry-narrated nature documentary A Year On Planet Earth, and reality series Lost in Paradise which sees contestants party hopping across Greece’s Aegean Islands.
ITVX will offer free content that includes series later to air on linear channels and catch-up TV, as well as exclusive paid-for content replacing BritBox UK.
Watch: Damian Lewis pays tribute to his late wife Helen McCrory