Skip to content

Data Provider: Welsh Government National Statistics Positive or refused breath tests in Wales by police force area and year
Drop Filter Fields Here
[Collapse]Police Force Area[Filter]
Police Force Area 1
[Collapse]Year 1
Year 2
[Collapse]WalesClick here to sortWales
Click here to sortNorth WalesClick here to sortDyfed-PowysClick here to sortSouth WalesClick here to sortGwent
[Collapse]Total 20171,6008001,6005004,500
Total 2017[Collapse]Jan-Mar 20174002004001001,000
Jan-Mar 2017January 201710001000400
February 20171001001000400
March 20171001001000300
[Collapse]Apr-Jun 20174002004001001,100
Apr-Jun 2017April 201710001000300
May 20171001001000400
June 20172001001000400
[Collapse]Jul-Sep 20174002004001001,200
Jul-Sep 2017July 20171001002000400
August 20172001001000400
September 2017200100100100400
[Collapse]Oct-Dec 20174002004002001,200
Oct-Dec 2017October 2017100100100100400
November 2017100100100100300
December 2017200100200100500


Number of Positive or refused breath tests by police force region in Wales

Last update
05 December 2018 05 December 2018

Next update
December 2019 (Provisional)

Publishing organisation
Welsh Government

Source 1
Breath Test Statistics for England and Wales, Home Office

National Statistics

Lowest level of geographical disaggregation
Police authorities

Geographical coverage

Languages covered
English and Welsh

Data licensing
You may use and re-use this data free of charge in any format or medium, under the terms of the Open Government License - see

General description
This annual statistical bulletin contains data relating to motoring offences on:
• Screening breath tests (2002 – 2017).
• Civil parking enforcements, carried out by local authorities, are not covered in this bulletin.

Equivalent data for England can be found at the links for the Home Office and the Ministry of Justice. Transport Scotland publish the number of motor vehicle offences recorded by the police by type of offence in the ‘Road Transport Vehicles’ chapter of the compendium publication titled “Scottish Transport Statistics”: ( The Scottish Government publishes the number of people proceeded against in court for motor vehicle offences in the Statistical Bulletin titled “Criminal Proceedings in Scotland”: (
The Police Service of Northern Ireland produces statistics on fixed penalty notices: ( The Northern Ireland Courts and Tribunals Service publish the number of defendants disposed of in the magistrates’ courts for motoring offences: (

Data collection and calculation
Data Source
The information on court proceedings reproduces the statistics compiled by the Ministry of Justice in their criminal justice series (

The coverage in ‘Police Powers and Procedures’ includes the use of police powers to issue fixed penalty notices for motoring offences. This is broken down by offence type and how they were dealt with (eg. penalty paid or fine registered at court). The data presented are drawn from returns from police forces in England and Wales. The figures also include notices issued by police employed traffic wardens for parking offences. It should be stressed here that most traffic wardens are now employed by local authorities, and their activities are not covered here.
Below is a list of the local authorities in Wales who have taken over the responsibility for parking enforcement and when this occurred:

Neath Port Talbot - 1 June 1999
Carmarthenshire - 1 June 1999
Denbighshire - 1 July 2004
Conwy - 1 Sept 2006
Gwynedd - 1 April 2007
Isle of Anglesey - 1 April 2007
Wrexham - 1 March 2008
Swansea - 1 Sept 2008
Cardiff - 5 July 2010
Pembrokeshire - 1 Feb 2011
Powys - 1 April 2011
Merthyr Tydfil - 11 Jan 2012
Ceredigion - 4 June 2012
Rhondda Cynon Taff - 1 Aug 2012
Bridgend - 1 April 2013
Vale of Glamorgan - 1 April 2013
Flintshire - 1 Oct 2013

Statistics on Vehicle Defect Rectification notices for motoring offences no longer appear in this bulletin as they were withdrawn from 2009.

Breath tests
The police can require a person to take a screening breath test if they have reasonable cause to suspect that the person has been driving or attempting to drive with alcohol in their body (Section 6(1) of the Road Traffic Act 1988), that they have committed a moving traffic offence (Section 6(1)), or that the person has been involved in an accident (Section 6(2)). A person failing to provide a breath test is guilty of ân offence, unless there is a reasonable excuse.

Frequency of publication

Data reference periods
2002 to 2017

Rounding applied
Data has been rounded to the nearest 100.

Revisions information
This data is revised annually

Statistical quality
The statistics are used both within and outside the Welsh Government to monitor trends in driving offences and as a baseline for further analysis. Breath test statistics are used to measure the effectiveness of drink–drive campaigns by police forces.

Timeliness and Punctuality
The statistics on court proceedings relate to cases in the magistrates’ courts in Wales during 12 months ending December 2015.

Motoring offenders statistical release:

Positive Breath Tests, Refused Breath Tests, Police Force Region