He confessed to a total of 11 acts of arson , and was convicted of 26 counts of manslaughter. 11 of these were overturned on appeal .
Dinsdale was one of Britain 's most prolific killers .
Dinsdale confessed to a total of 11 acts of arson , and was convicted of 26 counts of manslaughter. 11 of these were overturned on appeal .
Dinsdale was one of Britain 's most prolific killers .