Is this for an all over orange body tan or your bike?
I know some one who is just setting up a paint booth in Manchester but they are not quite there yet. They have real Pro's doing the prep and application and are highly regarded restorers of classic cars, so they know their stuff.
All you need to do is decide what you want and they will do it (except that Harley Death Skull airbrushing rubbish) if its possible: They will advise you upon paint & finish choice and tell you if it will work or not.
Let me know if you want more information about being the first job through the door of their new premises. They'll be keen and you'll get a good job.
What bike is it for please?