Another tourist has disappeared while visiting London with his family. 70-year-old Salem Handoon from Saudi Arabia took a black cab from Borough to Bishopsgate on Monday afternoon.
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Scotland Yard confirm that two people arrested in connection with the attack on Westminster have been released with no further action
An appeal to support the family of murdered policeman Keith Palmer has reached more than £700,000 in two days.
PC Keith Palmer will be remembered permanently at the National Memorial Arboretum, Home Secretary Amber Rudd has said.