Hello All! I will be flying with BA from London to Moscow at the end of april with my twin baby girls (7months). Does anyone know if I can take their twin buggy (Bugaboo Donkey) all the way to the airplane or would I need to check it in? What about the car seats - checked in as well? Should I buy special bags to put them in? What about baby food, can I take small cartons of Hipp with me through the security, or is it best to take water/powder separately? Thank you for your help!