During the funeral day procession, Philip’s driving cap and gloves were placed on the seat of his most recent carriage and his two Fell ponies marched towards Windsor Castle’s courtyard.
But the teenage royal revealed the true extent of Philip’s sporting influence.
“The Duke of Edinburgh has been so involved in my driving which has been lovely but slightly scary because he invented the sport pretty much,” she said.
Louise added: “It’s incredible to have learnt first-hand from him and definitely made us closer, I think.”
Prince Philip, who passed away in April aged 99, was also said to get “excited” about discussing the sport with his youngest granddaughter.
“After a competition, he’d always ask me how it went,” she recalled.
“His eyes would light up because he just gets so excited when he talks about it.”
But Philip also took Louise out to go carriage driving together.
“When we would go carriage driving”, she explained, “he would take me on a different route every day.”
“I do not know how he managed to do that and tell me all sorts of anecdotes about anything and everything.
“He is honestly one of the most interesting people I have ever met.”
Prince Edward’s daughter was not the only one of Philip’s grandchildren who told the BBC about the Duke’s passion for carriage racing.
Peter Phillips and Zara Tindall also shared their memories of joining their grandfather on a drive.
Zara said: “I do have a lot of fond memories of him driving the ponies.”
Her brother said in reply: “That was one of the scarier moments though wasn’t it?”
The BBC documentary, which aired on Wednesday at 9pm, was originally commissioned to mark Philip’s 100th birthday.
Sadly, Britain’s longest-serving consort missed out on his centenary celebrations by just three months.
Source: EXPRESS CO UK