The principal contractors supplying both hardware and software are the Plessey Co. Ltd., the Marconi Co. Ltd., and Elliott Bros. (London) Ltd.
The principal contractors supplying hardware only are Plessey Radar Ltd., Plessey Telecommunications Ltd. and Ferranti Ltd.
As the list of other contractors is rather long, I will, with permission, circulate it in the OFFICIAL REPORT.
I am grateful for that reply. Is it not true that Plessey has been unable to complete the software part of the contract and has had to subcontract? Has not the cost of continuing this hardware contract with Plessey become so high that it would be cheaper to begin again with Honeywell or Univac and to use their hardware system throughout?