Motorists Failing Alcohol Tests

Freedom of Information (FOI) Act request ref: 01/FOI/25/008975/T

Version Date: 11/12/2025

The Performance & Analysis Department has provided the following information:

Data Collection

Qlik View Report: Breath Tests                                                                                         

Date of Test: 01/12/2024 - 05/01/2025

Export to Excel

Crime Record Management System – NICHE

Qlik Sense Report: Detainee Management - Arrest Data

Arrest Date Time - 01/12/2024 - 05/01/2025

Arrest Offence:                                                                                            

• Aid abet the driving of a motor vehicle with a proportion of specified controlled drug above the specified limit (recordable)
• Attempt to drive a motor with a proportion of a specified controlled drug above the specified limit (recordable)     
• Attempt to drive vehicle whilst unfit through drugs (recordable)
• Drive a vehicle whilst unfit through drugs (recordable)
• Drive motor vehicle with a proportion of a specified controlled drug above the specified limit (recordable)
• In charge of a motor vehicle with proportion of a specified controlled drug above the specified limit (recordable)
• In charge of vehicle whilst unfit through drugs (recordable)

Qlik Sense Report: Detainee Management - Arrest Data

Arrest Date Time - 01/12/2024 - 05/01/2025

Arrest Offence:

• Attempt to drive vehicle whilst unfit through drink (recordable)
• Drive motor vehicle when alcohol level above limit (recordable)
• Drive whilst unfit though drink (recordable)
• In charge of motor vehicle - alcohol level above limit (recordable)
• In charge of vehicle whilst unfit through drink (recordable)

Qlik Sense Report: Detainee Management - Custody Data

Record Date Onwards: 01/12/2024 onwards     

Please note that someone could be arrested for multiple offences at a time, or further arrested after the fact (Primary and Additional arrests), this is the total of all arrests for the specified Arrest Offences, regardless of Primary or Additional classification.

Request 1.
The total number of motorists of all categories that were arrested by the police force between December 1, 2024 and January 5, 2025, after failing an alcohol breathalyser test.

If possible, please break down by time of day when the motorist was stopped by police and asked to take the test.

12 pm-6 am
6.01 am-11.59 am
Total stopped

Please note that this is the count of all failed breathalyser tests, not a count of arrests for failing a breathalyser test, as failing a breathalyser test is not an arrestable offence on its own.

Request 2.
The number of failed breathalyser tests in the following ranges (as measured in mg of alcohol per 100 millilitres of breath)
Between 35 mg and 70 mg
Between 70 mg and 105 mg
Between 105 mg and 140 mg
Above 140 mg

Request 3.
The total number of motorists of all categories that were arrested by the police force between December 1, 2024 and January 5, 2025, on suspicion of drug driving.

If possible, please break down by time of day.

12 pm-6 am
6.01 am-11.59 am
Total stopped

It is Important to note that someone could be arrested for multiple offences at a time, or further arrested after the fact (Primary and Additional arrests), this is the total of all arrests for the specified Arrest Offences, regardless of Primary or Additional classification.

There were 156 unique individuals who were arrested in the time frame for a drug driving offence, as it is possible that these individuals could have multiple arrests, whether they are arrested (Primary) and further arrested (Additional), or they are separately arrested on multiple occasions (2x Primary), the following table breaks down all arrests for drug driving offences in the timeframe:

Request 4.
The number of motorists who were stopped by the police force between December 1, 2024 and January 5, 2025, who were subsequently charged with
•           A drink-driving offence
•           A drug driving offence
•           A combination of drink and drug driving offences