An elite officer from Scotland Yard's Diplomatic Protection Group will be sentenced today for sharing obscene images using his mobile phone.
An investigation found that James Addison shared illegal material with other officers while on duty. His roles included guarding Downing Street.
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Hundreds of passengers were ordered to leave the terminal building and flights grounded after passengers suffered difficulties breathing.
Council leaders today called on the government to provide extra money to help resettle the youngsters in the capital.
An eyewitness said: "It was very unnerving. It was just after 12pm and there were suddenly police vans and cars everywhere."