The CAA collects statistics from all United Kingdom airlines. Monthly aggregate information is supplied on each route served together with quarterly returns of fleet and personnel data and, for the major carriers, annual standardised profit and loss accounts and balance sheets.
From the individual route level data it is possible to build up pictures of the activity of each airline. In addition the traffic and capacity on each route can be assessed. Airline statistics are available as monthly or annual publications or you may commission reports, within certain confidentiality constraints, to suit your particular needs.