Got an email from head for points for below deal:
A new Amazon discount code – AMEX25OFF – seems to get you £25 off a £40 order when you part-pay using Membership Rewards points.
For absolute clarity, this code works even if you already got a £15 or £25 discount when you originally linked your American Express and Amazon accounts.
To get this to work:
You need £40-worth of items in your basket which are ‘Sold by: Amazon EU S.a.r.L.’
For absolute clarity, anything sold by a third party, even if it is ‘Fulfilled by:’ Amazon, won’t count, neither will digital content or gift cards
Items must all have identical shipping times and be shipped to the same address
You need to select your Membership Rewards-linked American Express card to pay
You MUST select the option to fully pay with points (bad idea due to the poor value you get) or ‘part pay with points’ (a good idea, redeem 10p-worth as I did!)
You add promo code AMEX25OFF