Buliej, we took DD to the UK when she was 6 months old and whilst I can't answer your question about the car seat, I can tell you about the bassinet. You take your baby out of the bassinet when the seat belt sign goes on, so there is no worry of your DS bouncing out of it. I found it to be a complete PITA and DH and I said that we would buy our baby a seat again if we travel with her before she hits the age that you actually have to buy one. The bassinets are narrow, deep and just looked uncomfortable. We actually told them not to bother with it on the way back to Australia from the UK and she just sat with us and slept on me.

Others may have a different experience though.