(also Mitchell) is a fictional character from the BBC soap opera East Enders, played by Jamie Borthwick. Jay's storylines include being part of a gang, coping with the death of his father Jase Dyer (Stephen Lord), being orphaned by age 14 which results in his going into foster care and then being taken care of by the Mitchell family, as well as maturing from a wayward teen, becoming a surrogate brother to Ben Mitchell (Joshua Pascoe/Harry Reid), helping Ben cover up the murder of Heather Trott (Cheryl Fergison), being arrested for having indecent images of a child on his mobile phone after discovering his girlfriend Linzi Bragg (Amy-Leigh Hickman) is below the age of consent, drug dealing and developing a drug habit by taking cocaine.
Jay gives evidence at the trial and Tegs is sentenced to two years in a Young Offenders Institute.
Jay and Jase try to flee Walford when Jase double-crosses a football firm but Dawn stops their departure by setting a date for her and Jase's wedding.
Despite Abi's insecurities over Jay's friendship with Lola Pearce (Danielle Harold), she and Jay remain together, and eventually Max comes to accept them as a couple.
In 2012, Phil is imprisoned for the murder of his ex-partner Stella Crawford (Sophie Thompson), who abused Ben then jumped from a building in 2007 after Phil confronted her.
Jay starts dating Abi Branning (Lorna Fitzgerald) despite objections from her father Max Branning (Jake Wood), who thinks Jay is only interested in sex.