Should I do an LLM before or after articles?


That is up to you.  There are law firms that would prefer you to take on a contract of articles of clerkship directly after graduating with an LLB degree.  Others appreciate the maturity that an extra year or two of higher learning tends to bring to a prospective candidate legal practitioner.  Some people aver that once life happens; it is difficult to undertake further academic studies, so it is better to get that done as soon as possible.  Consult with friends and family, your lecturers, or a career guidance professional and carefully consider the different viewpoints.