Caught on camera: The moment a drunk driver went the wrong-way down the M5

Katy Homer, aged 26, was heavily under the influence of alcohol when she joined the southbound side of the motorway at junction 2 at Oldbury and drove north for three miles to junction 1 for West Bromwich.

A lorry driver flashed his lights at her and sounded his horn as he swerved out of her way – but she carried on up the inside lane of the carriageway.

On leaving the motorway, Homer, of Clent View Road, Colley Gate, near Halesowen, circled the Kenrick Way roundabout twice before being stopped by police.

The incident happened on December 4 at around 2.30am.

She was recorded as having 79 microgrammes of alcohol in 100 millilitres of breath. The legal alcohol limit is 35 microgrammes.

At Wolverhampton Crown Court yesterday Homer pleaded guilty to dangerous driving and drink driving.

Mr Malcolm Fowler, defending Homer, said: "It is a grave allegation.

"I did touch upon medical history, there is a serious condition of depression for this lady who is on medication.

"She is still in employment despite her condition."

Judge John Warner adjourned the case for a report from her general medical practitioner and the probation service.

He also gave her an interim driving disqualification until a sentencing hearing on March 28.

He said: "I am sure you are aware driving the wrong way on the motorway when over twice the limit is a very serious matter."

Homer was charged during the opening week of West Midlands Police's Christmas campaign to reduce drink driving.

Every person who was charged with drink or drug-driving offences was being named throughout the campaign on the force website.

More than 5,000 motorists were breathalysed across the West Midlands but fewer than seven per cent were over the legal limit.

A total of 205 drivers were charged with drink or drug-driving offences in December.

In 2009 the percentage of positive drivers was double that seen in 2013 with 13 per cent of drivers breathalysed failing the test.