By all accounts, Pierrepoint was an affable man who took great pride in his work. He was exceptionally good at it, and that's simply a fact. His executions were speedy affairs, carried out as quickly as possible to minimize the stress for not only prison staff, but also the condemned. Only seconds elapsed from the time he positioned a man on the trap until that man was dead. Following his retirement in 1956, the Home Office acknowledged that he was "the most efficient executioner in British history." (More than efficient compared with the job turned in by the U.S. Army Master Sergeant who executed the 10 war criminals convicted at Nuremberg -- those hangings were completely botched.) Pierrepoint's employer of record was HM Prison Service, and he conducted hangings at prisons all around Great Britain and Ireland for well over 20 years. He got his start in 1931 via his uncle Thomas, who was England's hangman at the time. (Clearly a wacky little kid growing up... In a school essay written when he was 11, Pierrepoint wrote, "When I leave school, I should like to be the Official Executioner.")
Another of Pierrepoint's hangings of note was William Joyce, aka Lord Haw-Haw, a Brit who broadcast German propaganda from Berlin throughout WWII. (Kind of a Nazi Tokyo Rose.) He was convicted of treason in 1945 and Albert Pierrepoint hanged him in '46.
Pierrepoint got into a squabble with the Home Office in 1956 and abruptly resigned. He had journeyed to Scotland to perform an execution, and the condemned man was reprieved at the last minute. Because of the travel hassles involved, Pierrepoint insisted on being paid regardless, and when that was refused, he quit. (Probably looking for a reason to bail at this point, anyway.)
Interesting: Great Britain abolished capital punishment in 1964. At the end, Pierrepoint had his own doubts about it, in part because some of the men he hanged were later shown to be innocent. In his book, (Executioner Pierrepoint; an Autobiography) he wrote: "I have come to the conclusion that executions solve nothing, and are only an antiquated relic of a primitive desire for revenge which takes the easy way and hands over the responsibility for revenge to other people. The trouble with the death penalty has always been that nobody wanted it for everybody, but everybody differed about who should get off."
Afterword: Albert Pierrepoint was married, but had no children. He and his wife Annie ran a little pub in Lancashire for awhile, where he was admired and a celebrity for having hanged so many Nazis. He spent the last four years of his life in a nursing home in the seaside town of Southport. He died there in 1992.