Do I need to resit my test or do any courses after my drink driving ban?

You wouldn't need to resit your test unless the court ordered you to do so. The same applies for courses although most courses are at the discretion of the magistrate and sometimes you get to decide whether to take part in the courses or not. For drink driving, there's usually the drink drive rehab course and it's upto judge to refer you to this course or not.

On a final note, there's no guarantee of getting back your licence after 2 years through the appeal process and most of the time you would need to have a valid reason for requesting your licence before your ban has expired.

There were several people on my drink drivers course that had been breathalised at over 2.5 times the legal limit and they were specifically ordered by the magistrates to resit their tests. There were also others that were still classed as high risk re-offenders even after the DD course. They also had to re-take their tests. This also usually applies if you are banned for a second/third time. However my test came in at 61 and I was just given 12 months ban with the DD course reducing it to 9. I also had quite a hefty £1000 fine.