Lewis is a sprint butterfly specialist who made his Commonwealth Games debut for Wales at Birmingham 2022. Since then, Lewis has established himself as a consistent performer at both domestic and international level and is the current Welsh record holder in both the 50m and 100m Butterfly.

His major achievements include:

• Gold medallist at the 2026 Euro Meet (100m Butterfly)
• Bronze medallist at the 2026 Aquatics GB Championships (100m Butterfly)
• European u/23’s finalist 2023 (50m Butterfly)
• 2 x Commonwealth Games finalist 2022, including a 4th place finish in the men’s 4x100m Medley relay

Lewis has recently set new personal bests and recorded a new Welsh record while claiming bronze in the 100m butterfly at the 2026 Aquatics GB championships.