On February 29, 2012, Her Majesty Queen Elizabeth II unveiled a new plaque in front of Buckingham Palace. According to the Telegraph newspaper, the plaque “… marks the start of the 60km (37.5 miles) Jubilee Greenway walking and cycling route.”
Finally, it was announced that Her Majesty will officially open the 2012 Summer Olympic Games in London on July 27, 2012. Per a press release from the British royal court:
Her Majesty The Queen, accompanied by His Royal Highness The Duke of Edinburgh, will open the London 2012 Olympic Games at the Olympic Stadium on Friday, 27th July.
The Queen, accompanied by The Duke of Edinburgh, will also open the London 2012 Paralympic Games at the Olympic Stadium on Wednesday, 29th August.