Delia Balmer's story has been highlighted in ITV's new true-crime drama Until I Kill You, with Anna Maxwell Martin depicting the real-life person.

Until I Kill You has been airing on ITV and the harrowing true crime drama tells the story of how Delia Balmer (played by Anna Maxwell-Martin) survived an attack by her axe-murderer boyfriend, John Sweeney (Shaun Evans).

Until I Kill You viewers are keen to know more about Delia Balmer's partner David, who is played by Kevin Doyle - but it is not known whether he is based on a real person

Until I Kill You is a new ITV drama based on the real-life case of Delia Balmer, who was in a relationship with a man who turned out to be a violent and dangerous killer.

ITV's latest offering, Until I Kill You, showcases not only an astonishing performance from Anna Maxwell Martin as a woman suffering at the hands of her serial killer boyfriend, it's also fearless in its depiction of a clever woman grappling with the tactics of her abuser.

ITV will air its new drama Until I Kill You this week - here's the true story behind Anna Maxwell Martin's character Delia Balmer

Until I Kill You has been airing on ITV and the harrowing true crime drama tells the story of how Delia Balmer (played by Anna Maxwell-Martin) survived an attack by her axe-murderer boyfriend, John Sweeney (Shaun Evans).

ITV's Until I Kill You is a dramatisation of the horrific true story of the attempted murder of Delia Balmer at the hands of serial killer John Sweeney. But who exactly is David, her supportive partner who she meets later in her life, and the actor who plays him?

Where is the real Delia Balmer who inspired ITV's Until I Kill You now? Here's what you need to know about her true life which inspired the drama.