In 2019, Joe became only the third British world champion in history when he produced a brilliant parallel bars routine to take the title in Stuttgart, Germany. At the same Championships, he secured a top 10 all-around finish with consistent routines across the apparatus, resulting in 8th place. He made a big statement at the 2017 British Championships, taking the all-around title in his first year as a senior, and then went on to the 2017 European Championships, finishing 5th all-around in a very competitive field. Part of the British team at the 2018 European Championships, Joe helped the team take silver, and also made the parallel bars and high bar apparatus finals. At the 2019 European Championships, Joe missed out on an all-around medal by the narrowest of margins, finishing 4th.