Martin worked with Cruiserweight Jon-Lewis during his time working in the English Institute of Sport facility and briefly whilst he was self-employed before Jon retired in 2016. Martin trained Jon through his English Title, then the British Title for which Jon-Lewis defended three times, which saw him retain the Lord Lonsdale Belt outright. He’s the only boxer to ever do this.
Martin also worked with Jon’s brother Travis, who fights at light-heavyweight, and won Prizefighter in January 2011. The pair are the only brothers ever to win Prizefighter.