The renowned equestrian rebuked her brother for “swearing” during the interview, which was uploaded to YouTube in 2010. The pair had been discussing their incredibly hard-working mother, Zara describing her incredible capacity to remember everyone she’s met. Then, Peter added that her work ethic had been passed onto them.
He said: “We were both very much brought up that whatever we did in life we were going to have to work b***** hard – whether that’s Zara doing equestrian three-day eventing or me in what I’m doing.
“At the end of the day, we were told we had to work b***** hard, so get on and do, don't complain or quibble about a bit of hard work.”
Zara then turned to her brother and said quietly: “You keep swearing!”
Peter put his hand over his mouth and said: “Oh, sorry! It was only once, wasn't it?”
Zara Tindall and Peter Phillips
The siblings laughed, and Zara added: “You usually say that to me!”
Zara, who was previously Zara Phillips, is the Queen’s granddaughter and 18th-in-line to the throne.
She is famous for her equestrian skills, having won the Eventing World Championship in 2006 and she also won a silver medal in the 2012 Olympics in London.
She was voted BBC Sports Personality of the Year in 2006 and has been awarded an MBE for services to equestrianism.
She married former England rugby captain Mike Tindall in 2011 and they have two daughters – Mia Grace and Lena Elizabeth.
Meanwhile, her older brother Peter, who is 15th-in-line to the throne, has worked in sports sponsorship and management for many years.
He married Autumn Kelly in 2008 and they also have two daughters – Savannah Anne Kathleen and Isla Elizabeth.
Zara and Peter seem to have a close relationship in the interview, bouncing off each other when answering the questions.
Princess Anne became physically sick at thought of very normal thing [COMMENT]
Meghan and Harry 'break precedent by taking public money with privacy' [REVEALED]
Meghan Markle and Prince Harry are 'copying' surprise royal couple [EXPERT]
Before Peter got in trouble for swearing, Zara was explaining how she felt about her hard-working mother.
She said: “I’m always amazed at how much she can fit into a week and the amount of different places she goes in the country and different people she meets.
“And she always remembers everyone that she’s met and it’s just unbelievable, her capacity to do all of it.”
Indeed, Princess Anne is the hardest-working royal, attending 447 official UK engagements and 71 overseas engagements in 2018, according to The Times.
However, Tim O’Donovan, the retired insurance broker who tallies up each royal’s number of appearances, emphasised that this number is not the whole picture.
He said: “All engagements differ as to time and content and there is also the time taken in preparation to consider, whether it be a visit, investiture or speech.”
Zara and Peter also laughed and joked during the interview, especially after Zara scolded her older brother.
Laughing and turning back to the camera, she said: “Anyway, carry on!”
To this, Peter said: “No no, that’s it!” and the pair giggled again.
Their obvious friendship melted the hearts of viewers, many of whom commented on the video.
One viewer wrote: “Princess Anne has two lovely children. So nice to see how close they all are.”
Another said: “Anne, your children are a credit to you, congratulations! You’re a credit to your mum too.”