Best results: won or shared first at Silkeborg 1983, Malaga 1987, Nantes 1987, Seville, Geneva, Lyon 1988, Clermont and Capelle la Grande 1989, Capablanca Memorial A 1993, Benidorm Open 1993, Dhaka 1995,Hastings 1996, Ilse of Man 2000, Welsh Intl 2004, Portsmouth and Coventry Open 2004, Kilkenny Open 2006, Irish Open championship 2007, John Spiegel Memorial (ENG) 2007, Hastings 2009/10. Occasionally
Occasionally, he was a member of the English team at the Olympiads in 1998 and 2004.
Hebden was British Rapidplay Chess Champion in 1990, 1994, 2001, 2005 and 2009, 2013, 2015.
English Grandmaster (1992).