I saw this advertised at the Wednesbury IKEA store.
If you have an IKEA Family Card and spend over £100 you will get a £10 IKEA voucher.
This offer is only valid on days that England are playing in the World Cup.
Ikea don't usually have many discounts or offers, and this should be HOT!!
Its definately Instore, but not sure about online.
Web site Blurb:
"Join IKEA FAMILY and get...
A £10 IKEA gift Card when you spend over £100 on England World Cup match days!
Offer valid on selected days between 12 June and 11 July 2010, with an IKEA FAMILY card."