A companion must accompany passengers in the following situations:· If the passenger has a mental impairment that prevents them from understanding safety and security instructions.· If the passenger is both hearing- and visually-impaired and this inhibits their ability to communicate with cabin staff.· If the passenger has a disability related to their motor skills, which would physically prevent them from being able to join an urgent evacuation (e.g. passengers suffering from paraplegia or paralysis, or who have lost both arms and can therefore not travel without a companion).A travelling companion must be over 18 and self-reliant.