From the back of the packet:

"They came...
From the darkest depths of the uncharted cosmos...
The Space Raiders.
Brightly coloured, bug eyed, bad guys with really big brains and easily enough alien technology to take over our planet. The only thing that can stop the Space Raiders imminent invasion of earth is the sound of munchin' crunchin' snacks!
So finish off this pack and go get another...before it's too late!"

Space Raiders are a corn snack food manufactured by KP Foods in the UK. They cost 10p a pack (16 cents) and are simply one of the worst food products in the history of the universe...if aliens will invade Earth unless I eat these things, then I for one welcome our new space raider overlords. They supposedly taste of pickled onions and generally hurt to eat because of the dryness of the things. But what do you expect for 10 pence?

The ingredients are: Maize, wheat flour, vegetable oil, pickled onion flavour (Acidity regulator: sodium diacetate, flavour enhancer: monosodium glutamate, citric acid, flavourings, dried cheese), salt, yeast flavour.