P
Q
R
S
T

Companies P
PAOGA Limited 
Panasonic      
Pcubed        
Pearson VUE UK        
Phase Vision Ltd        
Photo-Me International        
Post Office Ltd        
Premier Electronics Ltd        
Promethes Limited

Companies Q    
QinetiQ        
Quadrant Consultants Limited

Companies R        
Raytheon Systems Limited        
Redtray Limited        
Reica Systems        
Royal Mail Group        
RuleBurst Limited

Companies S       
Safelayer Secure Communications    
Sapior Ltd.        
Sarah Waite        
Satellite        
Scientific Generics Limited        
Secure Edge        
Secure Mail Services        
Security Printing & Systems Ltd (SPSL) 
SeeBeyond (UK) Limited        
SeeWhy Software Limited        
Serco Ltd        
Setec Oy        
Sharp Coproration        
Siemens Business Services Limited (GB & Ireland) 
SiVenture a division of NDS Limited 
Smart Sensors Limited        
Smart421        
SmartConsult        
SMS Management & Technology        
Speed Identity AB        
Steadlands International Marketing Ltd  
StepNexus Ltd        
Steria Limited        
Symantec (Norton Internet Security/Antivirus)

Companies T    
Tata Consultancy Services        
Technology Store        
Telephonetics Interactive Voice Systems Ltd.   
Temporal S. Ltd.        
Thales Group        
Thames Card Technology Ltd        
The Distillery (Europe) Ltd        
The essentiagroup        
TIBCO Software Inc        
TOSHIBA CORPORATION        
Transaction Network Services (UK) Limited      
Triad Group Generic Division        
Trüb AG (Switzerland)        
Trueb AG        
TSC Ltd        
T-Systems International        
Tukana Ltd