Exolon is flip-screen, run and gun platformer with puzzle elements designed by Raffaele Cecco and published by Hewson for several 8-bit computers including ZX Spectrum, Commodore 64 and Amstrad CPC.
Nebulus (known as Tower Toppler in the US) is an action platformer developed and designed by John M Phillips initially for the ZX Spectrum and Commodore 64. Later it was ported to Amiga, Atari ST, Amstrad CPC, Acorn 32-bit.
Eliminator is a sci-fi arcade/shooter designed by John M. Phillips and developed by Hewson initially for the Atari ST. It was published in 1988 also for the Amiga, Commodore 64, in 1988 for Atari ST, Amstrad CPC, and ZX Spectrum.