[1] A successful youth and junior athlete, Walker-Hebborn achieved a breakout year in 2014, winning two Commonwealth Games titles and three European Championship titles, including the Commonwealth Games and European Championships 100-metre backstroke gold medals.

In 2016 he was part of the Great Britain team to retain both the men's and mixed medley relay titles, his fourth and fifth European golds.

As a teenager he spent two years at the British Offshore Centre in Australia at The Southport School, from 2006 to 2008.

[2] Walker-Hebborn's preliminary heat performance in Rome secured him a place in the semifinals where, as one of the few swimmers not wearing the controversial[clarification needed] full body suit.

He was offered a scholarship at Florida State University in January 2009 but returned to his Bury St. Edmunds home after just a few weeks due to lack of long course training.