Holt took a maths degree and a PhD in statistics at Exeter with thesis titled Some contributions to the statistical analysis of single and mixed exponential distributions in 1970. Throughout his career, his main interests have been survey methods, sampling theory and official statistics. He took a particular interest, through his membership of the Royal Statistical Society, in the independence of national statistics from government.
Career
Holt's first job was with Statistics Canada, the national statistics office of Canada, where he spent four years before joining the Department of Social Statistics at the University of Southampton in 1980. He was Leverhulme Professor of Social Statistics from 1980 to 1995 and Deputy Vice-Chancellor from 1990 to 1995. From 1989 to 1991, he was also vice-president of the International Association of Survey Statisticians (IASS).