Watch Holby City season 18 episode 26 online for free. When Jason arrives on AAU with his seriously ill carer Allan, Serena’s personal involvement affects her professional judgement. If anything happened to Allan, Jason’s life would change forever. In the aftermath of the news that Arthur’s cancer has progressed, Dominic is overly protective of his friend, but acting out of character proves counterproductive. Keen to impress on her first day on Darwin, Cara has to manoeuvre herself though a Mo/Sir Dennis personality clash and a song-based initiation test.