Christmas is the season of office parties and celebrating with friends and family.

Responsible motorists would never dream of driving after a few drinks, but it’s surprisingly easy to have residual alcohol in your system the following morning.

Almost one in five drink drive convictions are the morning after the night before, and a third of all breath tests after an accident are conducted between 7am and 1pm.

You can now remove potentially fatal guesswork as to whether you’re safe to drive with the AlcoSense Lite 2 personal breathalyser.

Designed in the UK, it brings new levels of reliability and precision to the under £50 sector – thanks to an upgraded sensor, sampling system and simplified operation.

It gives you clear results in seconds. All you need for a reading is to turn the unit on, wait for it to count down to zero, then blow until it beeps. If you want to re-test, simply wait five minutes for the sensor to clear and blow again.

It can be set to the drink-drive limit in England, Wales and Northern Ireland – or the lower limit in Scotland and Republic of Ireland.

Sleekly designed in striking white, the pocket-sized AlcoSense Lite 2 is available priced £44.99 from Halfords or online at ENDS.