The campaign, part of a national initiative co-ordinated by the Association of Chief Police Officers (ACPO), ran between June 1 and June 30, 2013, and saw officers carry out 1,010 roadside breath tests
Brown's lawyers had said there were shortcomings in the strict breath test
procedures carried out by the arresting officers.
Across Wales 651 people were arrested for failing a breath test
and in North Wales of the 10,749 drivers breath tested
, 142 arrests were made.
At present, police can only carry out a breath test
if a driver has been driving erratically, been in an accident or has committed some other motoring offence, such as speeding or having a faulty light.
The figures showed 80 per cent of breath tests
, 89 per cent of blood samples and 82 per cent of urine tests were over the limit.
Taking into consideration that accidents involving illegal levels of alcohol have increased since 1997, it is quite surprising that the number of breath tests
is on the decline.
Under force procedure officers attending road accidents are required to breath test
all drivers involved.
In Dyfed Powys a total of 11,281 breath tests
were carried out, with 161 being positive.
Of those 123 people failed or refused a breath test
, a total of 3.
Overall, the Home Office figures showed: * In 2009, a total of 813,288 breath tests
were carried out - 14 per cent more than in 2008; * The number of positive (over the limit) tests in 2009 increased by 3 per cent on the 2008 total; * With more tests carried out in 2009 than in the previous year, the proportion of positive or failed tests fell from 13 per cent in 2008 to 12 per cent in 2009.
Around 4,000 breath tests
were taken and 108 people were arrested.
Insp Clive Isherwood, from West Midlands Police, said: "This year's campaign saw a significant increase in the number of vehicles stopped and breath tests