At the Asthma UK Centre for Applied Research, we analyse the routine datasets we have on asthma in order to provide key estimates of the indicators of the burden of asthma in the UK and its member nations.
These estimates include incidence (new asthma cases), prevalence (people with asthma), number of GP and nurse consultations, number of telephone calls to out of hour services, number of ambulance trips, visits to accident and emergency (A&E), hospital admissions, admission to intensive care unit, deaths and costs to the public sector (including disability allowance payments).
The graphic below provides a summary of data published in 2016, available for the United Kingdom. You can also view data for each of the home nations.

Read the full paper in BMC Medicine from which these data are taken:
Mukherjee et al. BMC Medicine (2016) 14:113