if you know of an individual who has been convicted in court you can contact the court to find out the result, but there are no such published lists that I am aware of.
if i knew someone was caught DD and after their court case they were still driving, I would be tempted to find out their sentence so as to report a suspended driver driving.
Or maybe an employer needs/wants to know?
in aberdeen where I come from its usually printed in the local papers with photogragph and a short detailed story
as for joggerjayne's question there are a few reasons why someone would want to find out about a drink driver conviction easiest answer is an employer checking up on his drivers
You can't! Unless you can access the court records and do a manual search by name or you have saved an media articles, criminal records are private in the UK and cannot be accessed except in exceptional circumstances.