[1][3] Brian Jacks later achieved national fame, due to his enormous upper body strength, for his performances on the BBC programme Superstars,[4] all-around sports competition that pits elite athletes from different sports against one another in a series of athletic events resembling a decathlon.

Jacks was most famous for his efforts in the gymnasium, where he repeatedly set records in the "gym tests", including 100 parallel bar dips in 60 seconds in the 1981 Challenge of the Champions, and 118 squat thrusts in the 1980 World Final.

[citation needed] He was also very dominant in the weightlifting, canoeing and cycling events, rarely placing lower than second.

Jacks was never able to win the World Superstars title, being forced to miss the 1979 event due to illness and finishing third in 1980.

[6] After retiring from judo he opened a fitness and martial arts club, and in 1990 he started a company hiring bouncy castles.