Greg took a training session at the Eldon Square shopping centre as part of the launch event.
He won gold at London 2012 long jump and says now it's his turn to inspire others.
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Pam Royle has been along to surprise this year's ITV Tyne Tees Fundraiser of the Year.
The breakthrough by Newcastle scientists could save the sight of thousands worldwide.
The touring stage show is on at the Empire and ITV Tyne Tees couldn't resist the opportunity to check out the fun and flares back stage.