The following standardised questionnaires will be used: Asthma Control Test, children >12 years (ACT) or Childhood Asthma Control Test, children 6-11years (cACT) (usually completed as part of a routine clinical visit); Mini Paediatric Asthma Quality of Life Questionnaire (PAQLQ); Medicines Adherence Rating Scale (MARS); Beliefs about Medicines Questionnaire (BMQ).