£100 promotion could backfire if it's a White Christmas
Crown Eyeglass has been running a White Christmas promotion where customers get£100 pound cash back if they have ordered complete prescription glasses between December 1 and 20. However, the Direkt Optik and Crown Optical Centres parent will only pay up, if it's an official white Christmas this year.

The retailer claims to have improved sales in December by 40 per cent, bucking the trend of poor trading suffered by other retailers. Now however, it risks having to pay some of those sales back.

To qualify, snow must be falling between 12.00pm and 1.00pmon the roof of the London Weather Centre on December 25.

As of writing, Ladbrokes put the odds of an official white Christmas this year at 3/1.

Crown Eyeglass has around 44 stores in the north of England and Scotland.