Amex has launched new offers in the UK where you can earn a statement credit with a number of retailers when you spend at the UK’s airport.
To secure the credits you must link your Amex account with Foursquare. Do the link here.

They all expire on 31 January.

The current offers require lower spends than most of the recent offerings. I know I shall be using a couple of these in the next week. Note that the credits are limited in nature, but as you don’t get to register it’s hard to know whether you qualify until after purchase! I think you’ll be OK as with the exception for the Fortnum & Mason offer (which is limited to 5,000), offers the chance to earn for 10,000 – 25,000 participants.

Note the location of the stores as some of them may be at other airports but you won’t earn the credits if you shop there. The £5 back on a £10 spend at WHSmith is good value in my view.

If you don’t have a UK Amex you can secure 22,000 bonus Membership Rewards points (I get a small number too) if you use this link and spend £2000 in the first three months of membership.