
Outer Spacers were corn and wheat snacks that appeared in the 1980s. There's not a huge amount about them on the www although TV Cream reveals that they were "always "beefburger flavour" letter "A" shapes that were meant to be rockets, or pickled onion "space stations" (ie. rings). As with Farmer Brown's etc., the boldness of the design was let down by the primitive moulding technology. May still be with us, but they changed them some time in the '80s, and put a cartoon of what looked like Sigue Sigue Sputnik's Martin Degville on the packet."
The Do You Remember forum included a chat about them via which I found the above image and that they were produced in beefburger, pickled onion and chutney flavours.
An odd story I found on the web (in back issues of David Langford's Ansible from 1983) is that a fan paid a goodly sum at a Gerry Anderson convention for a packet of Outer Spacers which Gerry promptly signed.
According to Wikipedia entry on KP Snacks, KP stands for Kenyon Produce originally founded as Kenyon & Son in 1853 and have been best known for their KP Nuts peanuts which they still produce at the rate of 180 million packets a year.
Apparently, Outer Spacers were later rebranded as Alien Spacers and I believe they're still being produced under the name Space Raiders. Believe it or not, they're reviewed here.
Anyway, enough of this snack-based chit-chat... here's the advert.

