He made his Premiership Rugby debut in November 2024.[9] In March 2025, he appeared off-the-bench away against Saracens, scoring 13 points with his boot to help during a 23–12 away victory, the first time the club had beaten Saracens since 2009.[10]
In December 2025, he scored his first try in the Champions Cup during a 68–14 victory against Bayonne.[11] In May 2026, he scored a hat-trick of tries from full-back during a 76–17 victory against Newcastle Red Bulls.[12]
Benson qualifies for both England, through birth, and Ireland.[14]
In February 2022, he featured for England at under-20 level, making his debut against Scotland U20, and making his start the following weekend against Italy U20.[15][16] Benson was selected for the England A squad in November 2025.[17]