What's the drink drive limit in England, Wales and Northern Ireland? In England, Wales and Northern Ireland, the drink driving alcohol limit for drivers is: 80 milligrammes of alcohol per 100 millilitres of blood (the 'blood limit') 35 micrograms per 100 millilitres of breath (the 'breath limit')
men and women are advised not to drink more than 14 units a week on a regular basis. spread your drinking over 3 or more days if you regularly drink as much as 14 units a week.