@kudos_ni, you get one and a half hours to study the material for SDM Test, then you get couple of minutes for practice it and then you entitled to a break which after you undertaking actual SDM Test which lasts for about 38min. It's quite fun, though I found the voice of the woman which tells you the instructions quite annoying
Apart from that you will do 3 NATS tests and FEAST test which involves 6 other tests. I won't tell you what they are about cause that will miss the point of the computer tests.
@KFM, you supposed to get another email with a details to SHL online test.
# just realised that kudos_ni is having a S2 today
. Any way, info might be helpful for the other in the future.