I doubt it. The shock absorbers were probably just weaker than when new at the time of the MOT test. Could well pass the MOT with the same ones next time, unless they have begun to leak. On a car that age I wouldn't replace them unless a) it was necessary to do so to pass the MOT test, or b) if the handling had deteriorated to the point when driving it had become unsafe or uncomfortable.
Chicks Fan, November 2008