Category:Defunct computer companies of the United Kingdom

• Defunct software companies of the United Kingdom (2 C, 20 P)

A

• Acorn Computers (5 C, 53 P)
• Amstrad (2 C, 20 P)
• Apricot Computers (4 P)

E

• English Electric (3 C, 13 P)

S

• Sinclair Research (2 C, 31 P)

T

• Tangerine Computer Systems (3 P)

A

• Acorn Computers
• Acorn Computers (2006)
• Alphamosaic
• Amstrad
• Apricot Computers
• Astec

B

• Blaze Europe

C

• Cambridge Systems Technology
• Computer Technology Limited
• Cumana (company)
• Currah

D

• Digico Limited
• Dragon Data

E

• Elliott Brothers (computer company)
• English Electric
• English Electric Computers
• English Electric Leo Marconi
• Evesham Technology

F

• Ferranti
• Flare Technology

G

• GEC Computers
• GEC Plessey Telecommunications
• Gnodal
• Grandstand (game manufacturer)
• Granville Technology Group
• Grid Systems

I

• Inmos
• International Computers and Tabulators
• International Computers Limited

J

• Jupiter Cantab

K

• Kano Computing
• Kempston Micro Electronics

M

• Madge Networks
• Marconi Communications
• Marconi Company
• Meiko Scientific
• Memotech
• Miles Gordon Technology
• Miracle Systems

N

• NEC Software Solutions

P

• Parrot Corporation

Q

• Quadrics (company)

R

• Rodime

S

• Sensaura
• SiConnect
• Sinclair Research
• Spider Systems
• Standard Telephones and Cables
• Systime Computers

T

• Tadpole Computer
• Tangerine Computer Systems
• TelecityGroup
• Torch Computers

W

• Whitechapel Computer Works

Z

• Zeda Computers