Scotland's Legal Alcohol Limits for Driving
- Blood: 50 milligrams of alcohol per 100 millilitres of blood
- Breath: 22 micrograms of alcohol per 100 millilitres of breath
- Urine: 67 milligrams of alcohol per 100 millilitres of urine
Why is Scotland different? Since December 2014, Scotland has maintained a lower drink drive limit than England, Wales, and Northern Ireland (which remain at 80mg/100ml). This stricter limit means Scottish drivers must consume significantly less alcohol to stay legal.
Police Scotland enforcement: Officers can breathalyse any driver stopped for any moving traffic offence. The official advice is clear: if you plan to drive, avoid alcohol altogether, as even small amounts can impair your ability and put you over the limit.
Morning after warning: Many drivers are caught over the limit the morning after drinking. Alcohol takes time to leave your system – typically one hour per unit, but this varies by individual. Use our calculator to check when you'll genuinely be safe to drive.