Information about organization dodis.ch/R40646
BT Group
BT Group (1981...)British Telecom (1981...)
BT (1981...)
Post Office Telecommunications (1969–1981)
National Telephone Company (1912–1969)
Electric Telegraph Company (1846–1912)
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Relations to other organizations (1)
| BT Group | is under management of | UK/Post Office | 1912–1981 |