PCML Ltd

PCML Limited were based in Esher, Surrey which was originally a leasing and brokerage firm operating in the UMB mainframe market.

The managing director (John Fuller) and his partner, Derek Batey set up QL Plus in October 1984 to design add-ons exclusively for the machine. They produced a range of hardware for the Sinclair QL, sold under either the QL Plus brand, or the PCML brand, including:

• PCML Q Disk Interface
• PCML Q Memory Expansion Interface
• PCML Q+ 3.5" Disk Drive
• PCML Toolkit
• QL Plus CPM Interface

PCML Limited appear to have been wound up after going into liquidation in about 1989.