????
Looks like the usual lack of infrastructure, and silly planning.
The airport could use some more concrete, but you probably have to ask someone in London or somewhere to do that.
Surely it's better to depart sooner or later and save time and fuel? Or do you wait for ATC to tell you to do that?
And the term "general aviation" actually means "the things that fly" to normal people. What is often meant by aviators is "light aircraft". Why don't we call them that? This GA jazz was started by aeroplane sales people who said the "general public" were a bit scared of light aircraft, so we won't use that term. Our regulator joined with them in their deception.