The family of an Ilford holidaymaker who died in police custody in Dubai want the Prime Minister to raise the death of their son with the country's president.
David Cameron has already said he'll discuss the case of three Londoners who say they were tortured by police there, during the state visit.
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Police have stepped up patrols after a woman in her 40s was "dragged to the ground" in a park in east London.
Families living near Heathrow say they are supporting a group of activists facing jail for chaining themselves to the airport's runway.
Police were called to break up a "large fight" which involved a baseball bat, a man dislocating his shoulder and three arrests.