His Majesty then watched a sparring demonstration before heading to the outdoor boxing area, where he met further young fighters and members of local boxing clubs.
A particularly memorable moment came when the King was presented with a T-shirt featuring a cartoon of himself kitted out in boxing shorts and gloves, topped with a crown.
The gift left Charles in fits of laughter.
He encountered Jermaine Gibson, president and chief executive of the All-Out Boxing Club, and his son at the academy, both sporting the humorous T-shirts bearing the royal boxing image.