Queen's 90th birthday is marked at Trooping the Colour parade

More than 1,600 soldiers and 300 horses are taking part in the annual event on Horse Guards Parade.

Later the Queen will join other members of the Royal Family on the Buckingham Palace balcony for an RAF fly-past.

A flotilla of historic boats will also take part in a procession on the River Thames and royal gun salutes will be fired in several cities across the UK.

The Queen has attended the annual event - also known as the Queen's birthday parade - every year of her reign, except in 1955 when a national rail strike led to the event being cancelled.
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