Went to the Harvey Nichols store this afternoon with girlfriend and found a small notice at the till just before paying a handbag:
"10% off for your first purchase (£100+) with HN store/credit card".
The first reaction was asked the sales lady and rushed to the customer services for application. After less than 15mins, we got the storecard and a 10% coupon which can be used for any purchase up to your store/credit card limit.
The story ended with a pretty girl bought a beautiful handbag home for £40 less than the original price.
PS: That 10% coupon has no expiry date but can be used for full price purchase only. The 10% coupon has not been mentioned on their website.