After being convicted of drink driving the court may give you the option to attend a drink drivers rehabilitation course if they feel that you will benefit from it. It is entirely up to you to attend the course, and there will be a charge for attending but you may be able to take 25% of time off the length of your ban.
The purpose of this course is to teach you the effects of drinking alcohol over a wide range of issues. It is not intended to discipline you for you drink driving offence.
You will have to successfully complete the course by attending each session, (usually 6) and then you will receive your certificate which you can use to inform the Driver and Vehicle Licensing Agent of your reduced disqualification.
You must complete the course at least 2 months prior to the end of the reduced period of your driving bad.
Click here to visit the gov.uk website page on rehabilitation courses.