The Prime Minister has apologised after his ex-No 10 spin doctor was found guilty of plotting to hack phones while he was editor of the News of the World.
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The Defence Department is already in the middle of a congressionally-mandated review of the space force issue.
Detectives have charged 19-year-old Bilal Mumin with murder, grievous bodily harm and possession of an offensive weapon.
Members of the RMT on Arriva Rail North (Northern) walked out for 24 hours, with more stoppages due on Thursday and Saturday.