Prince William writes personal message for event supporting cancer research

Prince William on Saturday sent a personal message in support o Siwmathon, the world’s biggest annual pool-based fundraising swim as it marks 40 years since its beginning.

The event allows swimmers of all abilities to challenge themselves with various distances while fundraising for charities, primarily Cancer Research UK and Marie Curie.

According to the event organizers, "From 20 to 22 March 2026 over 450 pools across the UK will host the challenge."

The future king took to Instagram to share a message signed with his own initial. " Congratulations to Siwmathon on 40 years of bringing people together through swimming. It's so inspiring to see hundreds of thousands of people taking part while raising millions for life-changing charities."

Meanwhile, a message on Swimathon's website urged people to "Make a splash this spring and celebrate 40 years of Swimathon by taking part in the world’s biggest annual pool-based fundraising swim."