It seems the morning after the night before could now be the most dangerous time on the roads during the party season – with more revellers than ever before admitting they drive just hours after a heavy drinking session.

The number of motorists driving after drinking excessively the night before is on the increase, it was revealed today.

Road safety experts say people seem unaware of the dangers of getting behind the wheel the morning after they have potentially consumed significant amounts of alcohol.

Drivers were also warned not to assume they would be safe after drinking small quantities of alcohol.

As many as 38 per cent of drivers and motorcyclists said they had taken to the road after a heavy night’s drinking, compared with only 28 per cent in a similar poll seven years ago.

The latest survey, from road safety charity Brake and insurance company Direct Line, showed 45 per cent reckoned they would need to consume two or more units of alcohol for their driving to be affected.

As many as 14 per cent believed it would take three, four or more units to have an effect.

Overall, 35 per cent of the 800 drivers and riders surveyed admitted driving after drinking alcohol (any amount) at some stage during the last year – down from the figure of 51 per cent in 2003.

Brake campaigns director Julie Townsend said: “We’re appealing to everyone to stay safe over the festive season by planning ahead.

“Make sure you can get home safely, and stay off the booze if you’re driving home or early the next day.”