If our Tone or any of his ministerial colleagues are on company business then it is right and proper that they should use company transport in line with international standards.
If they are of on a private jolly, well opinion may divided on that one.
What is not in doubt is that such use would be defined by the Inland Revenue as a "benefit in kind" and as such would (or should) be subject to income tax.
Now, the tax on a couple of these flights should take care of the fat cat rises these crooks awarded themselves without notice the day after the general election.