Gold2017
Male open kata
Birth-year category: 2000–2001
KWF SA National Championship
Dorfman Dojo · Official dojo report, page 3
Karate · Dorfman Dojo · South Africa
Discipline.
Precision. Gold.
David Hamlyn is an accomplished KWF World Cup competitor and national gold medallist. He competed at the 2017 KWF World Cup in Malta and won national gold in two kata categories that year.
Gold2017
Kata
Senior championship category
KWF SA National Senior Championship
Dorfman Dojo · Official dojo report, page 3
2017 KWF World Cup · Malta · Kata
World-championship competition
David Hamlyn competed at the 2017 KWF World Cup in Malta. His karate background includes international competition and South African national medals, alongside his work as a machine-learning doctoral researcher.
Official KWF website · 2017 Malta World Cup event guidelines (PDF)
View World Cup photos (2)
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The record
Results & press coverage
Dorfman Karate Shoots the Lights Out at 2017 KWF SA Championship
The full results record a further medal: silver in mixed jiyu ippon kumite for competitors born in 2000–2002. They also confirm David Hamlyn’s gold in male open kata for the 2000–2001 category.
2017 Dorfman Karate Report
The dojo’s results list names David Hamlyn as a gold medallist in two kata categories: male open kata for competitors born in 2000–2001, and a senior male kata division.
View the senior category as recorded
The report lists the senior result under male brown-belt kata.
Parktown dojo shakes up world order
In its review of the dojo’s 2017 achievements, Sandton Chronicle names David Hamlyn among the open-category gold medallists at the KWF South African National Karate Championship.
The other open category gold medallists in the various age groups were David Hamlyn, Tihan Enslin, Gadija Essop, Aaron Friedlein, Matthew Pine and Reynier Landman.
Dorfman karate chops competition
The review of the dojo’s 2015 season names David Hamlyn among the bronze medallists in the open sections of the KWF South Africa national competition. It does not specify his individual event or age category.
2009 National Championships
The results list David Hamlyn, dojo code DOR, in first place in boys’ novice kata (born in 2000), page 6, and second place in boys’ open kumite (born in 2000), page 3.
Beyond the dojo
Machine-learning research
David Hamlyn is a doctoral researcher at the University of Southampton, working on computer vision and solar irradiance forecasting. His research explores how sky images and environmental data can support solar-energy prediction.
He is a co-author of Vision Transformers for Estimating Irradiance Using Data Scarce Sky Images, published in Energy and AI in 2025 and recorded in Southampton’s research repository.
Vision Transformers paper · GateFormer paper · ORCID researcher identifier