Too much talk !
G-XXXX holding short RWY XX ready departure.
That is all you need say, the guy on final and the tower know that you are now ready to go and that you are holding clear of the runway. Any more is just useless waffle clogging the frequency!
Dispite "holding short" being an ICAO standard term the British don't seem to use it very much........................ Why when it is so usefull to keep the chat to a minimum?
However if the field is uncontroled and the aircraft is on base I would say "G-XXXX taking off RW XX" and be long gone before the average light aircraft was half way down final app.