Chaps,
I am just about to go on-line with Astraeus, and have the following to offer if its of any use:
Interview: Very straight forward. starts with a general knowledge exam which you can't really prepare for. The usual distance, speed, time calculations, currency conversions, and geography, etc. This is followed by an interview, which is very relaxed and informal...nothing to get worked up about.
Training: Astraeus training is second to none. My trainers were brilliant in their depth of knowledge, enthusiasm and general know how in the industry, and have now become personal friends, as have everyone on the course with me. They have comitted themselves to completing just about all of their training 'in house', and this adds to the efficiency and fluency of the course. If i enjoy the flying half as much as i have enjoyed the training, then it all seems worth it.
Astraeus is indeed small, but perfectly formed. There is no real feeling of domineering manegerial heirachy, and every member of the team is friendly and approachable.
Hope this is all of some use to you! Happy Landings!