Well if cost is no object and these people are so incredible important they won't have any problem with a 100% VAT paid at the location of manufacture (not some rinky dinky modern day pirate haven place of registration) will they?
No one is that important, although some people might think they are; if Putin and Obama can make do with subsonics and telecoms links so can they.
On a less bitter note, it looks like it might be a bit of a hot ship to handle at low speed, would it be able to get into Citation sized airfields.