The husband and wife team from Bell Farm Lane, Minster, breed award-winning shire horses and on Sunday won the team prize. Jayne also came second in the pairs and singles classes.
She said: "It was phenomenal. Everything went very well."
The couple were showing three horses, Dizzy B, Oscar and Henry.
But instead of returning home when the show at Detling ended they loaded up the horse box and set off for Yorkshire 240 miles away where they were met by a Channel 4 TV crew.
Jayne said: "We've been on a bit of a tour.
"We started at the Royal Three Counties Show in Malvern then went to the Royal Highland Show in Edinburgh where we won best team and then to the Royal Norfolk Show in Norwich.
"We managed four days at home and then it was off the the Kent County Show and now we are at the Great Yorkshire Show in Harrogate."
She added: "We had never been to Edinburgh before.
"John had always wanted to go but we could never afford it.
"However, he will be 60 in September so friends and family clubbed together to allow us to go instead of having a party. It's been great. We were even on the BBC's Countryfile programme "
Island firm Brambledown Farm Shop also had a big presence at the Kent County Show by sponsoring the stables at the Heavy Horse Village.
Paul Weeks, who runs the Sweet Hut on Minster Leas, had his rebuilt 1919 French De Dion Bouton car Veronica on show and there was an original Maidstone and District Volvo Ailsa double-decker bus from the 1970s which had been repainted and looked ready to return to run the 300 route to Leysdown.
Crowds were impressed by diving dogs from K9 Aqua Sports, Titan the robot and the Cossack-style trick riding from the British Dzhigitovka Team.
Nicola Prior, who runs Nic's Restaurant in Queenborough, came second in the show's flower competition 'Birthday Party' category.
Young farmers from Sittingbourne school Westlands walked off with a string of awards at the Kent County Show. They have their own farm at the school in Westlands Avenue.
The 90th Kent County Show was sponsored by Quinn Estates.