Thanks Tarbat,
Does look a bit cluttered with lots of Aircraft with no labels.
Will need to think abpout this a bit longer.
The London area is very cluttered with aircraft :-)
You can manually set the size of the aircraft in Preferences. If you don't do this, RB auto-sizes the aircraft to make them easier to see - but it does make them much larger than life-size.
I adjust my settings depending on what part of the world I'm viewing.
You can also choose what information is displayed in the aircraft label and also change the size of this too.