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.
More top news
Police have released a CCTV image of a woman they want to speak to, after a woman was hit with a bottle in a Newcastle bar.
Jet2.com will host roadshows across the UK, including Newcastle, to fill over 1,700 Pilot, Cabin Crew and Ground Operations roles.
Over 50 fire officers and eight fire engines are dealing with flooding across Scarborough.