The dad of a talented young man who drowned at his family’s £3.5million mansion said his son swam two lengths before “sinking to the bottom”.
Dominic Hamlyn, a University of Cambridge student, died after suffering a suspected cardiac arrest in an outdoor pool.
The 24-year-old’s heartbroken father paid tribute to his “hero” son in a moving statement.
He described him as a “superb athlete” and a “beautiful boy” who had delivered a 15-minute speech at his brother’s 21st birthday party just moments before he died.
“There is no mystery, there were no drugs,” Peter Hamlyn said.
“He was swimming in his swimming trunks, almost sober. He had just spoken for 15 minutes without notes.
“It was his youngest brother’s 21st and shortly after giving a brilliant speech about him, Dominic went swimming with friends.
“He completed two lengths and then sank to the bottom.
“He was immediately pulled from the water and a medical student started performing CPR until I came a minute later to take over.”
Mr Hamlyn said an ambulance arrived “fast” and paramedics were able to stabilise him.
The 24-year-old was then transferred to the William Harvey Hospital in Ashford, Kent.
“Two consultants worked on him throughout the night,” Mr Hamlyn said. “A specialist team came from St Thomas to put him on a bypass.
“He died last night despite all their efforts. There will be an inquest but he clearly had a heart attack – a brain scan ruled out a haemorrhage. Their brilliance at resuscitation is our only comfort.
“Why did he die? He was a superb athlete competing in both rugby and rowing at Cambridge.
“It is called Sudden Death in Athletes or sometimes Sudden Athlete Death – SAD. It is a rare often fatal cardiac syndrome. What the footballer had and survived. Not our beautiful, beautiful boy.
“We are broken. If he is to be remembered it is as a hero and one of the world’s helpers.”
Dominic, a first class graduate in astrophysics, continued his academic journey to Cambridge where he studied philosophy at a Masters level.
The 24-year-old was visiting his exquisite home in the tiny village of Crundale, Kent, when he got into difficulties in the outdoor swimming pool.
His dad, Peter Hamlyn, specialises in elite sports injuries and originally studied at University College London where he received a First Class Honours degree in science and engineering.
Following in his father’s footsteps, the Spanish-speaking budding entrepreneur was elected sports officer during his undergraduate degree representing the sporting interests of more than 40,000 students before going on to study a Masters degree in Philosophy at the world-renowned University of Cambridge.