Factual error: The show starts in 1901 with a woman constable working for the Metropolitan Police Service (Scotland Yard). However women didn't join the Metropolitan Police until 1919 (which is also when the first woman's police uniform was created). Prior to that, women volunteered in the Women's Police Service, but that wasn't formed until 1914.
Factual error: An article in a British newspaper uses the spelling "jail." The spelling of the word at the time was "gaol." (00:05:45)
Revealing mistake: A typewriter is being used, but the carriage is not moving. (00:42:50)
Factual error: A bill is shown in close-up, and the amounts listed are in decimal money rather than pounds, shillings and pence. British currency was not decimalised until 1971. (00:10:35)