Sport/Event: Athletics, 400m hurdles, 400m and 4x400m relay
Date and Place of Birth: 27 February 1984, Bridgend, Wales
Club: Cardiff AAC
The reigning European champion and bronze medallist from Delhi in 2010, Williams also represented Wales at the commonwealths in Melbourne, 2006.
He was crowned Welsh male athlete of the year in 2013 after setting new personal bests over 400m hurdles and 400m.
Williams is the son of former Welsh international rugby union player J.J. Williams.
Selected to represent Wales at Commonwealth Games in Glasgow, 2014
Gold – European Championships, Helsinki, Finland, 2012
Bronze – Commonwealth Games, Delhi, India, 2010
Selected to represent Wales at Commonwealth Games, Delhi, India, 2010
Silver – European Championships, Barcelona 400m hurdles, 2010
Selected to represent Wales at Commonwealth Games, Melbourne, Australia, 2006
Silver – European Championships, 4x400m relay, Göteborg, Sweden, 2006
Bronze – European Championships, Göteborg, Sweden, 2006