In 1965, Clarke and Preston submitted a paper to the Institute (JIA 92) which gave the results for the period 1947–63 of the mortality experienced by impaired lives who were issued policies by their office. In 1978, Clarke presented a paper (JIA 106) reporting on the experience of the next 10 years, viz. 1964–73. The primary purpose of this paper is to report on the experience of a further 10 years, viz. 1974–83.