1) Online application submission followed by tests (Situational, Numerical etc). The online tests are fine if you practice and prepare.
2) Assessment Centre: This consisted of a group exercise of around 6 people. Each person was given documents and a unique sheet of information per person and in a group, you'd need to come to a conclusion based on this information.
Next was a 1-2-1 interview which was largely competency based, but interviewers could probe your answers. For example I answered a question with some technical information and was asked more about it.
After the interview, there was a technical presentation, 20-ish minutes to prepare and 10 minutes to present in a 1-2-1 format again.
The day was relaxed, food provided, chatted with current graduates.