 Business aviation has shown strong growth , although the numbers of aircraft on the UK register have declined . This reflects a shift away from turboprop aircraft towards foreign @-@ registered business jets based in the UK , which are estimated to be growing in numbers . However , twin piston @-@ engined aircraft numbers have declined significantly , reflecting pressures on the light air @-@ taxi segment from increasingly flexible and cheaper scheduled services , and a more sophisticated corporate charter business . The amount of flight training conducted by UK schools has declined , largely at the hands of competition from foreign schools , which benefit from lower costs and better weather . 
 Business aviation <a href='been_done' title='1'><mark>has</mark></a> shown strong growth , although the numbers of aircraft on the UK register <a href='been_done' title='2'><mark>have</mark></a> declined . This <a href='uninflect' title='3'><mark>reflects</mark></a> a shift away from turboprop aircraft towards foreign @-@ registered business jets based in the UK , which are estimated to be growing in numbers . However , twin piston @-@ engined aircraft numbers <a href='been_done' title='4'><mark>have</mark></a> declined significantly , reflecting pressures on the light air @-@ taxi segment from increasingly flexible and cheaper scheduled services , and a more sophisticated corporate charter business . The amount of flight training conducted by UK schools <a href='been_done' title='5'><mark>has</mark></a> declined , largely at the hands of competition from foreign schools , which benefit from lower costs and better weather . 
Business aviation done shown strong growth , although da numbers of aircraft on the UK register done declined . dis reflect a shift away from turboprop aircraft towards foreign @-@ registered bizness jets based in the UK , which r estimated to b growin in numbers . However , twin piston @-@ engined aircraft numbers done declined significantly , reflecting pressures on tdalight air @-@ taxi segment from increasingly flexible and cheaper scheduled services , and a more sophisticated corporate charter business . The amount of flight training conducted by UK schools done declined , largely at thdaands of competition from foreign schools , which benefit from lower costs and better weather .