During her visit to the Ebony Horse Club, the Queen met our Senior Correspondent Ronke Phillips who is patron of the charity. She's seen first hand some of it's work and how it's changed the lives of some of London's children, including three of girls who took part in today's event.
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Around 60 firefighters tackled the blaze at the four-storey building in Daleham Gardens, Hampstead, that broke out early on Tuesday.
It is the fourth time in five years that the London borough has topped the rankings, according to data from the ONS.
Catherine Burke's body was discovered at a house in a quiet street in Muswell Hill last Thursday evening.