Alex Harrison is the brother of Ally Harrison.
Alex had a close relationship with his sister, Ally, which was sometimes mistaken for as an incestuous relationship. Alex later met with an old school friend, but their reunion was cut short when her husband accused Alex of having a cyber affair with her. The pair ended up fighting, but the fight was separated by Ben Davies.
Whilst on a night out, Alex met a nun, Sister Claire. The pair shared a drink together and returned to the lodge before Alex took her back home. He then began to try win Claire's affection, but Claire reciprocate Alex's feelings. Alex invited Claire to Dave's wedding, and Claire accepted, later discovering Alex's true motive for inviting her. Alex later encountered his ex-girlfriend, Ash, at the wedding. Ash was upset and angry when Alex rejected her. Ash later accused Alex of rape; she went to the police as well as the press. However, Ash's lie was discovered and Alex was acquitted.