Police forces are now better equipped than ever to tackle drink and drug driving on Britain's roads, the nation's biggest constabulary has warned.
In a lengthy information page, the Met Police laid out the legal alcohol limit - 80 milligrams of alcohol per 100 millilitres of blood or 35 micrograms of alcohol per 100 millilitres of breath in England, Wales and Northern Ireland — before warning that there is "no way to know how much you can drink and stay under the limit". This is because it depends on your weight, age, metabolism, the amount of food you've eaten and other factors. In Scotland, the limit is stricter — 50 milligrams of alcohol in 100ml of blood or 22 micrograms of alcohol per 100 ml of breath.
In addition, the Met says, it is impossible to get alcohol out of your system quickly - a shower, a cup of coffee or other ways of "sobering up" may make you feel better but won’t remove the alcohol from your system.