David Cameron is calling for an inquiry into the claims three London men were tortured in Dubai. Grant Cameron, Suneet Jeerh and Karl Williams were given four-year sentences for possessing drugs. All three deny the charges.
David Cameron told Daybreak this morning he will press for a "proper independent investigation" into the torture claims. He meets with UAE President Sheikh Al Zahyan on the second day of his official state visit to the UK.
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PC Keith Palmer, 48, stabbed by Khalid Masood while on duty in the grounds of the Palace of Westminster last Wednesday.
Those gathered on the bridge fell silent at 2.40pm - the time the first call was made to police exactly seven days ago.
Simon Lucy, 61, filmed hundreds of hours worth of footage on the London Underground network.