Cadan is an English professional rugby union player who plays as a wing for Premiership Rugby club Harlequins. In November 2024, he scored two tries for England A against Australia. Off the back of this performance, he was called into the senior training squad for the 2024 Autumn Nations Series fixture against Japan. Although uncapped in that series, he received a call-up to the squad once more for the 2025 Six Nations. In January 2025, he was named in the starting lineup to make his debut in the opening round of the tournament against Ireland. He scored a try and assisted another as England were eventually defeated 27–22.