 The number of pilots licensed by the CAA to fly powered aircraft in 2005 was 47 @,@ 000 , of whom 28 @,@ 000 held a Private Pilot Licence . The remainder held professional pilot licences , either a Commercial Pilot Licence or an <unk> Transport Pilot Licence , although not all of these would be engaged in GA activities . In addition , there are 10 @,@ 000 active glider pilots , and estimates put the membership of aviation @-@ related sport and recreational associations at 36 @,@ 000 . 
