LONDON (Reuters Life!) - The number of British motorists caught drink driving during a month-long police campaign was down from last year despite an increase in the number of tests, senior officers said on Thursday.

The Association of Chief Police Officers said more than 90,000 people were breath-tested during the 30-day campaign run during June across England and Wales, an increase of 13 percent from the previous year.

Of these 7.6 percent were over the limit or refused to take the test, down from 9.7 percent in last year's summer campaign.

"It is disappointing that there are still a significant percentage of people ignoring the fact that drinking and driving kills," said Mick Giannasi, ACPO's spokesman on roads policing.

He said the figures also showed a significant fall in the number of under 25s testing positive to below the national average.

"But these rates are still not good enough. Driving when under the influence of any substance is dangerous to the driver themselves, along with their passengers, people in other cars and pedestrians. We should not tolerate this type of behavior," he said.

(Reporting by Michael Holden; Editing by Tim Castle and Paul Casciato)