Complex sentence: In 1950, Barton-Wright was interviewed by Gunji Koizumi, the founder of the London Budokwai judo club later that year he was presented to an audience at a Budokwai gathering, as the pioneer of Japanese martial arts in Europe.
Split into simpler sentences: In 1950, Barton-Wright was interviewed by Gunji Koizumi, the founder of the London Budokwai judo club. Later that year he was presented to an audience at a Budokwai gathering, being introduced as the pioneer of Japanese martial arts in Europe.