Here's the best I could find, term-wise:
"In honor of this new partnership, you can receive 5,000 bonus BA Miles when you transfer Membership RewardsŪ points to British Airways before January 31, 2010. You must be enrolled in the British Airways Executive Club in order to participate in this offer, visit
www.ba.com to enroll. Bonus Miles will be awarded by February 28, 2010. One bonus per Cardmember. Taxes, fees, charges & surcharges, including airline surcharged, apply."
I'll dig for more. But it does say "one bonus per Cardmember. I assume that means Amex cardmember, and I have four on this Amex account, so I might be able to make that work, at least for those four, two of whom are on my household account.