Marathon world record-holder Paula Radcliffe told ITV News that she was "excited" to return to the Olympic Stadium, as thousands gather to take part in the National Lottery Anniversary Run.
Radcliffe thanked the British public and Olympic committee for "continuing to support sports".
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It’s the second country on Harry and Meghan's four-nation tour - the first thing you learn here is they give visitors a warm welcome.
However, skies will be cloudier in northern and western Scotland with rain and drizzle.
The Duchess was presented with a bouquet of flowers on arrival.