Category:Telecommunications companies of the United Kingdom

• Telecommunications company headquarters in the United Kingdom (3 P)

B

• BT Group (5 C, 84 P, 7 F)

C

• Cable television companies of the United Kingdom (9 P)

D

• Defunct telecommunications companies of the United Kingdom (1 C, 46 P)

I

• Inmarsat (1 C, 2 P)
• Internet service providers of the United Kingdom (2 C, 36 P)

K

• KCOM Group brands (3 P)

M

• Mobile phone companies of the United Kingdom (5 C, 31 P)

T

• TalkTalk Group (1 C, 12 P)

V

• Virgin Media (15 P)
• Virgin Media O2 (2 C, 3 P)
• VoIP companies of the United Kingdom (4 P)

*

• List of historical British telcos

A

• Accurx
• Aircom International
• Airtel Africa
• Airwave Solutions
• Aql (company)
• Arqiva

B

• Babble (company)
• BES Utilities
• Timeline of telephone companies in Birmingham
• BT Business and Public Sector
• BT Consumer
• BT Enterprise
• BT Group
• BT Wholesale and Ventures
• Bullitt Group

C

• Cable & Wireless Communications
• Cambridge Broadband
• CityFibre
• Colt Technology Services
• Company85
• CTIL

D

• Daisy Group

E

• EE (telecommunications)
• Entanet
• EuNetworks

F

• FleXtel

G

• Global Cloud Xchange

H

• Hyperoptic

I

• Inmarsat
• Iomart

K

• KCOM Group

L

• Liberty Global

N

• NEQSOL Holding
• Nexfibre

O

• O2 (brand)
• O2 (UK)
• Openreach

S

• SpinVox
• Spirent
• Spusu

T

• TalkTalk Business
• TalkTalk Group
• Telecom Plus
• Telent
• Tep Wireless
• Truphone

V

• Viatel Inc.
• Virgin Media Business
• Virgin Media O2
• Vodafone
• Vodafone Global Enterprise
• Vorboss

W

• Webex CPaaS Solutions
• WightFibre

X

• XLN

Y

• Yell (company)

Z

• Zen Internet