looking over the previous threads as been very helpfull for info but is a little dated so for people waiting to attend the stage 1 tests this is my experience:
firstly i arrived at the collage in hurn 15 minutes before test was scheduled
you show the security at the gate your id and pointed towards the building
once you have entered the building you will arrive at reception show your id and you will be given an escorted visitors badge and told to sit in the waiting room
15 minutes later and HR arrive and escort u to the examination room
once seated in the room you are taken through the rules and the layout of the afternoon you are given a choice to reschedule if you are not prepared (nobody rescheduled)
test 1 is now handed out the atc paper if you have learned the document provided you will have no problem it is multiple choice and is not as technical as u may think having recieved NATS detailed document
test 2 is a numerical test on speed/distance/time most units used are devisable by 60 and the key is to convert mph to mpm (miles per minute ) and due to being multiple choice the answer you have come up with should be there
15 minute break whilst the papers are marked and at this stage you were told that some people are going home and not proceeding to next stage. i am usually confident but this added alot of pressure especially when my name was read out to leave the room along with 15 or so others to my relief we were going to sit the next stage.
test 3 diagrams / commands not wanting to jinx myself as i have not recieved my results i didnt find this overly difficult the time limit was tight but you could eliminate two answers usually straight away leaving the correct and 1 wrong answer
test 4 last but not least the dreaded cubes the first 20 or so questions were of the same difficulty as the examples provided and the latter part of the test became increasingly difficult you are ver tight on time
for the diagram and cube test you are not issued with scrap paper and cant think how scrap paper could help you there isnt enough time for doodles or sketches.
home time
hope this as been of some help and i guess by previos posts experiences may vary GOOD LUCK!