Can't see this posted, not sure how long it's been on offer for. This is not the £10 off that has been posted far too many times already over the past 24 hours!
Looks like an offer for Prime members only.
Just saw this on Amazon, I was getting a few bits in my basket to take advantage of the current £10 off £50 spend. It's a sample box of various sports nutrition and slimming products for £10 but you get £10 promotional purchase to spend on sports nutrition or slimming products. I buy slimfast from Amazon, it's cheap at £3.49/tin anyway so it's a free box of stuff including a drinks shaker. And it's bumped my basket up towards the £50 spend so win-win..