Out of 3, 250 drivers tested during December in a joint operation across the two force areas, 96 were positive or failed to provide a sample - 2.95%.

BBC: Festive drink-drive figures up in Durham and Cleveland

Since the Crime and Security Act became law last year, police have had powers to force thousands of past offenders across England and Wales to provide a DNA sample in order to help solve serious crimes such as murder, rape and manslaughter dating back up to 40 years.

BBC: A DNA autoradiogram