Bit-7 Computer Software was a trading name used by Martin Young. Bit-7 was responsible for Page Setter 64, a DTP package for 64KB CPCs (tape or disc). Previously Bit-7 had called itself Microdata (and released the Tiny Desk Top Publisher).
The most recent incarnation of Bit-7 is as Bit-7 Software Technology Limited ([1]), a developer of tools and games for mobile phones.
Martin Young also contributed several parts to the Bitmap Vandals' Demoware 2.