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Allegiance was the fourteenth episode of Series 6 and the 79th episode of Casualty overall.
A tabloid photographer crashes through the glass conservatory roof of a womanizing MP trying to take a photo. The MP's wife is crushed and the two men end up fighting in casualty. A middle aged gay businessman faces life without his partner who has suffered a fatal heart attack. The partner's daughter turns up, making her hostility to their lifestyle clear. An aging rock guitarist electrocutes himself on an amplifier. His injuries are superficial but his career is over. Beth gets her GP's job.