Union Jack said:
Royal Navy - Lieutenant Commander
Army - Captain**
RAF - Squadron Leader
** Curiously enough since it is one rank lower than the rank indicated for the other two Services, but would cover both Thing's RLC man - and Mark Phillips!
And James Hewitt.
Seems that friendship with da laydees of the Royal Family confers on some the right to continue to use one's otherwise undistinguished military rank in private life.
(Rumour has it that Hewitt failed the exams to Major three times and that he finally achieved that rank after leaving the Army. Quite how or why I can't fathom).