Consider this.....
The first thing we would ask you is,
1) do you have any other form of emergency which requires you to land ASAP?
and
2) What is your fuel endurance?
If your answer is to
1) No.
and / or
2) 1 hour +....
You can naff off somewhere else, we don't wnat you blocking our runway and creeating the subsequent loss of revenue.
This may sound very callous, but sadly, it's something you'll be asked about at most commercial / licensed airfields.