Not so Kieron.... I gave you the names to most of the copy protection systems
Company Protection Name
------------ ---------------------
Gremlin, Magnetic Fields SS MFM (Shaun Southern)
Sensible SOS MFM (Sensible Operating
System)
Richard Aplin CyberDOS MFM
Psygnosis Reflections MFM
Rob Northen Protected DOS MFM (PDOS)
Readysoft RL DOS (Randy Linden) MFM
Digital Illusions TSL MFM (The Silents)
Factor 5 MT MFM (Manfred Trenz)
Rainbird, Silverbird, Microstyle, Microprose, Probe, Maelstrom, Realtime Games ZZKJ MFM (Programmer for Probe)
Bloodhouse BS MFM (Bloodsuckers)
Tony Crowther RAT Dos (Tonys nickname was RAT)
Anco Cobra X-Rom
Special FX, Rage SFX MFM (Special FX)
Thalion JH Dos (Jochen Hippel)
Sales Curve RPW (Ronald Pieket Wieserik)
They are the main ones that were in use more than once. Obviously there are more (Rise of the Robots MagicDOS), but for the most part, these protection systems were only used once, and thus would carry the name of the game as its protection system.