Contents:
- Anton Piller (UK) Ltd
- Pitney Bowes Data Systems
- Plessey
- Post Office
- Potter Data Products
- PowersSamas Accounting
- Pragma Ltd
- Precision Instrument Co
- Prime Computers (UK) Ltd
- Process Peripherals Ltd
- Prowest Electronics Ltd
- Punched Card Accessories Ltd
- Pye Group
- Pyral SA
- Quarndon Electronics Ltd
- Quest Automation Ltd