Adams was the first British male to win a World title, and the first British male to simultaneously hold a world title and a European title. Other achievements include a gold medal at the 1981 World Judo Championships in Maastricht, the Netherlands, plus silver medals in the 1980 and 1984 Summer Olympic Games and the 1983 Judo World Championships. Adams was also five-time European Champion. On 18 December 2018 he was promoted by the International Judo Federation to kudan - 9th Dan at the age of 60.