All the Executive Directors at Swire Pacific are employees of John Swire and Sons Ltd. John Swire & Sons Ltd. head office is listed as Swire House, 59 Buckingham Gate, London SW1E 6AJ, England. Seems to have worked out all right so far
CX is a public company listed on the Hong Kong Exchange, the largest shareholder is Swire Pacific which is also listed on the HK exchange. Seems to be a HK company as far as I can see. Try to not look to deep, you might find an airline in Oz who's foreign ownership has been questioned a number of times.
CX is using the argument that their head office is in Australia and not HK. Talking with people who have applied for work with JQ, they have been told that it will be done out of Australia!