Visit Four - End of Study Visit This visit will take place in the participants home and comprise of verbal consent, Demographics, Medical, exacerbation and healthcare utilisation history, Quality of Life questionnaires and assessment of inhaler technique. This will be assessed using the critical errors list for each inhaler devices and technique will be videoed. Participants will also be asked to complete a feedback questionnaire to evaluate user experience. Those allocated online will have their tablet computers collected by the study team and have a written self management plan delivered.