An Amazon best-seller and social media guru has returned to his old uni for its graduation.

Joe Wicks, 30, one of the St Mary’s University's most successful recent alumni, who graduated himself in 2008, returned to address the School of Sport, Health and Applied Science graduating class of 2017 at a ceremony in Westminster Cathedral.

The body coach who transformed his personal training business into a million-selling book series, TV show and social media empire attended the Twickenham university, from 2005 to 2008, to study Sport Science.

Francis Campbell, St Mary’s Vice-Chancellor, said: “We were delighted to welcome Joe back to address our graduates.

“It is almost ten years since he sat in the same seats in Westminster Cathedral with his colleagues in the class of 2008.”

The online nutritionist, who claims he can transform your body in 90 days, with his shift, shape and sustain program, to get clients fit, toned and healthy.

“His success since he graduated from St Mary’s serves as an inspiration to our current and future students, as well as our global alumni community.

“I am certain his words today will motivate our graduates to discover rewarding and successful careers, and I hope they too will come back and share their experience with our students.”

Having sold 2.5 million books in 18 months, hosted a television programme, and overseen 100,000 client transformations, Joe posting clips of him throwing ingredients into a pan on his Instagram and twitter accounts.

In his speech, the fitness entrepreneur told students about his journey, including graduating from St Mary’s to becoming a successful business owner and social media influencer.

The body coach further encouraged the students to follow their goals and be creative to find the right career.

After addressing the 2017 class, the GQ cover model, posted a YouTube video on his account with a personal note – to which the fitness coach received huge amounts of praise and gratitude.

“I was so nervous but so proud to be asked by my old University to speak at this year's graduation ceremony in Westminster Cathedral. It was a chance for me to share my story with this year's St Mary's graduates and show them that you can achieve anything if you work hard and believe in yourself”