UPDATE (17/02/17) - the deal has now reappeared on my cards and is saving successfully. Have another go if you received the error previously.

Looks good if you're going to be eating out in London, Edinburgh or Norfolk. Logon to your online account to save the offer.

NOTE - Currently receiving the error "Unable to save offer at this time - please try again later" when trying to save the offer to card. Hopefully this will be resolved by Amex later today.

AMERICAN EXPRESS INVITES
Spend £10 or more, get £10 back
Save to Card to get £10 back on a transaction of £10+ at an American Express Invites dining restaurant by 10/04/17. Valid once per Card for the first 10,000 Cardmembers to save. Terms, location and payment restrictions apply.

More info, including list of participating restaurants - http://mintcreative.com/staging/20830-AMEX-App-Participating-Restaurants/

Dine at any of the participating restaurants below and receive a £10 statement credit on a transaction of £10 or more. In addition you’ll also still enjoy your special complimentary dining benefits such as an appetizer, a bottle of wine or 20% off the food bill as part of the dining program.

To redeem your £10 statement credit dine at the participating restaurant of your choice, spend a minimum of £10 and pay with your American Express Card. To receive your special dining benefit, simply identify yourself as an American Express cardholder upon arrival or advise when booking.