- Active Data - Supplier of Compaq DeskPro, Armada, and Proliant systems, plus spares and upgrades for several old Compaq lines. Prices in UK pounds.
- Ambry - Supplies, components, and replacement parts for Compaq and HP systems. Based in the United States, but ships internationally.
- Black River Computers - Experts in HP 3000 and 9000.
- Dasher Technologies - Buy, sell and service new and refurbished Hewlett Packard computer systems, peripherals and components including HP9000, HP3000 and HP1000 systems.
- Dataworx Systems, Ltd. - New and refurbished HP 9000, HP 3000, HP NetServers systems and peripherals.
- dp Computers Ltd. - dp Computers Ltd is a computer company specialising in S/390 and Open Systems hardware, software and services.
- HP - Hewlett-Packard company store.
- HP Laboratories Cambridge - Specializes in technologies for CPU architectures and their compilers and other tools. Also has projects in embedded VLIW processing, compiling for instruction-level processing, and dynamic optimization.
- HP OpenCall - Provides information and support for HP OpenCall's comprehensive line of computer-based SS7, and Intelligent Network service telecommunications platforms.
- HPsales.co.uk - Suppliers of Hewlett-Packard hardware. Based in the UK
- MDL Corporation - Provides storage, backup, and performance technology for Hewlett-Packard and other Unix and Windows based systems.
- Paramount Computer Corporation - Reseller of new and refurbished HP hardware. Specializing in HP 9000 series servers, workstations, PCs, netservers, printers, data storage solutions and monitors.
- Prestige Systems - Sells HP Unix and Windows NT products, services and solutions with value added services for additional enhancement.
- Sillworks - Distributor of excess and factory refurbished computers and related equipment.
- Southwest Computer Solutions - Buys, sells, rents, and maintains Hewlett-Packard 9000 and 3000 computer equipment, laser printers and their associated peripherals.
- The Museum of HP Calculators - Displays and describes HP calculators introduced from 1968 to 1986 plus a few later models. Sections on calculating machines and slide rules, an HP timeline, collecting information and a software library.
- The Public Netperf Homepage - Retrieve information about netperf and the performance of systems running the netperf benchmark community. HP helps provides the resources of this server, which also helps keep one of their engineers happy.
- TSA Inc. - New and refurbished Hewlett-Packard equipment.