Originally Posted by fbgdavidson

Q: How do I get the invitation?
The main route is to spend regular high amounts on another American Express card, approximately $150,000 in the US or in the UK as little as £15k can warrant an invite. You do need to have an immaculate payment history and have been holding another American Express card for at least one year. In the UK it appears that not only the amount spent but what it is spent on counts some way towards being invited. Regular spend on airlines and hotels does appear to give you some leeway.

There are other ways. A large deposit into American Express bank (think six figures) is another way around the $150,000 per year marker. Also those who have had customer service issues with the Platinum chargecard and threaten to cancel have been offered the Centurion card.