This page has the original brochure copy and maps from the early days of Skewjack. Apparently there is an even earlier one..

Some notes:
Cuddles - the whale eating the boat in Brochure 2 is named after the killer whale of the same name we had in a wildlife park that Scotia Investments owned.
In Brochure 4Chris Tyler is in the water ... not sure who is on the wave..
I'm looking out of the disco in Brochure 4. Must have been a good night as I had my shades on.