This was first mentioned in the Comments to another post a few days ago. (This is why I recommend that email and RSS subscribers to Head for Points should also check out the site itself occasionally, and why people who read the site early in the morning should check back later in the day to read the comments!)
American Express is offering British Airways American Express cardholders 500 bonus Avios points when they add a supplementary cardholder to their account.
Supplementary cards are free. There is no stated limit about how many you can give out – the terms and conditions of the card only say “We may limit the number of Supplementary Cardmembers allowed on your Account”. Applicants must be over 18, however.
You obviously shouldn’t be giving out cards to all and sundry, but if your partner or over-18 children don’t have one, it may be worth filling in the form. You don’t actually have to give them the card when it arrives!
(To see our complete list of all current credit card sign-up bonuses, click here to visit our ‘Credit Cards Update’ page or use the link in the menu bar at the top of the page.)