Team-mate Joe Fraser almost matched Jarman’s golden haul but a slip-up on the high bar denied him a clean sweep.
Nevertheless, Fraser became the first Englishman to win gold on parallel bars.
Alice Kinsella, who won an Olympic bronze in the team event in Tokyo, added to her Commonwealth team gold with a well-deserved victory on the floor after the disappointment of coming fourth in the all-around and balance beam.
But it was the Jarman show, although he celebrated his success with the modesty which has endeared him to the public over the past few days. “It’s always very challenging,” he said. “You don’t know how you might do. You can be under just as much pressure at a smaller competition as well as a competition this big. But to be able to come here and enjoy it and produce an amazing result, I am absolutely honoured.
“I’m going to find somewhere in my house to store the medals – maybe a glass cabinet or something like that, if there’s space.”
He will have little time to party, with the European Championships in Munich starting in nine days. “I will have a nice meal out tonight and then relax. The downtime is so important; you have to mentally reset. But we will be back on it soon.”
Jarman was first encouraged into gymnastics as a seven-year-old, and spent hours climbing the monkey bars in his local playground. With his complex vault routines, he has now become one of the faces of these Games, having been a reserve at the Tokyo Olympics, where the British men came fourth. That team was all-English, including Fraser, James Hall and Giarnni Regini-Moran.
Such is the level of difficulty Jarman can reach on the vault, that even if he made errors on both attempts, he could still win gold. He made a backwards step on both landings but he ended up with a combined score of 14.916. Regini-Moran was just behind him on 14.633, with bronze going to Australian James Bacueti.
Fraser praised the crowd’s support. “I have been filled with joy here,” he said. “It just makes me want to add more to my training, work harder so I can perform in front of this crowd. This is my home town, this is my home crowd.”
Kinsella’s gold made up for the disappointment of missing out on a medal on Sunday because of the error she made on her floor routine in the difficult 2½ twist into a somersault. She completed the difficult floor routine with the Duke and Duchess of Sussex and Princess Charlotte in attendance.
Ondine Achampong claimed a second silver after her strong performance in the all-around.