Paul_Exeter
Justified & Ancient
- Joined
- Jan 9, 2012
- Messages
- 3,991
As a resident of Cornwall this didn't surprise me 
"The 1967 Act introduced the first legally enforceable maximum blood alcohol level for drivers, introducing roadside breathalysers and it is from this that the process began. In 1967 William Ducie and Tom Parry Jones developed and marketed the first electronic breathalyser. Here in Cornwall, officers in Newlyn had been using a dead fish until this point on the basis that anyone drunk enough to blow into the mouth of a dead fish was too drunk to drive."
https://www.dcpolicingmuseum.co.uk/stories/a-brief-history-of-the-breathalyser/
"The 1967 Act introduced the first legally enforceable maximum blood alcohol level for drivers, introducing roadside breathalysers and it is from this that the process began. In 1967 William Ducie and Tom Parry Jones developed and marketed the first electronic breathalyser. Here in Cornwall, officers in Newlyn had been using a dead fish until this point on the basis that anyone drunk enough to blow into the mouth of a dead fish was too drunk to drive."
https://www.dcpolicingmuseum.co.uk/stories/a-brief-history-of-the-breathalyser/