Cadbury's - The Dandy and Beano card game

Some stuff you find and think "exactly how did I acquire this?"

This item falls in to that category. The "Cadbury's" bit helps as it would suggest it was a promotional item obtained through the purchase of chocolatey goodness, however, beyond that I'm stumped. I found out with some fine googling that it dates to 1990.

So, it's a card game with Dennis the Menace, Korky the Cat, Desperate Dan etc. I don't have the packet it came in (assuming it did have a packet) but a nice set of cards for a collector nonetheless.