19:
2315:
1229:
555:
186:, severed its links with the Post Office and became a totally separate public corporation. Records of British Telecommunications (public corporation) are held from 1981 until privatisation in 1984. Records after privatisation, of British Telecommunications plc 1984-2001, and of BT Group plc from 2001, continue to be preserved and made available for researchers in line with BT's heritage policy.
2325:
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activities continue concurrently and subsequently to the private telegraph and telephone companies. These are documented in the records of the Post Office telegraph and telephone service 1864-1969 and the Post Office
Corporation (Telecommunications division) 1969-1981.
227:
and is open, by appointment, to public researchers on
Wednesdays and Thursdays from 10:00am – 4:00pm. There is no access charge. Holborn was the first public automatic exchange in London in 1927, see
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BT Archives also holds records of the private telephone companies and of the Post Office telephone services. The private telephone companies represented are the
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BT Archives cares for more than 500,000 images and 1,000 film titles. Selected images can be found on BT Archives online image gallery.
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The records include minutes, subject files, photographs, film and advertising material that tell the story of
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from the first one issued in 1880. For preservation reasons the phone books are generally accessed on
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network, the heritage initiative founded by BT in 2001 to safeguard telecommunications artefacts.
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2010:
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Descriptions of the historic collections are available on the BT Archives online catalogue.
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129:. BT Archives also holds documents relating to the UK telegraph service of the British
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1820:
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133:; the private companies being brought under the control of the Post Office in 1870.
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from 1846. Other private telegraph companies whose records are held are the
British
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220:
208:, and the phone books 1880-1984 are digitised and have been made available online.
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320:- The History of the Telegraph Companies in Britain between 1838 and 1868
57:
in the UK and from the UK to overseas, from the formation of the private
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BT Archives and
Connected Earth together form BT Heritage, part of BT's
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Full access, acquisition and preservation policies can be found on the
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1103:
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preserving the documentary heritage of the
British telecoms company
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predecessors. It is designated an official place of deposit for
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150:
Lancashire and
Cheshire Telephonic Exchange Company Limited
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The
British Phone Book collection is a major resource for
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The earliest records held by BT Archives are those of the
65:
companies in the nineteenth century to the present day.
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BT Archives is based in
Holborn Telephone Exchange on
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Organisations based in the London
Borough of Camden
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History of telecommunications in the United Kingdom
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162:Western Counties and South Wales Telephone Company
313:Searchable records from BT Archives phone books
170:London and Globe Telephone Maintenance Company
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123:English and Irish Magnetic Telegraph Company
95:British and Irish Magnetic Telegraph Company
91:Electric and International Telegraph Company
2422:Mobile phone industry in the United Kingdom
2288:Global telecommunications regulation bodies
166:Corporation of Glasgow Telephone Department
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142:Edison Telephone Company of London Limited
138:Telephone Company Limited (Bell's Patents)
1215:British Telecommunications plc v. Prodigy
1210:Young Scientist and Technology Exhibition
1084:Digital Private Network Signalling System
103:United Kingdom Electric Telegraph Company
2392:Archives in the London Borough of Camden
2412:Online archives of the United Kingdom
1099:International Packet Switched Service
46:, for those records created prior to
7:
2427:Photo archives in the United Kingdom
2334:
1240:
197:, containing a near-complete set of
154:Northern District Telephone Company
107:Universal Private Telegraph Company
1079:Digital Access Signalling System 1
1033:Digital Access Signalling System 2
773:National Network Management Centre
14:
1089:Fixed-Mobile Convergence Alliance
783:Zouches Farm transmitting station
778:Peterborough transmitting station
119:Irish Submarine Telegraph Company
99:London District Telegraph Company
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1923:Free-space optical communication
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1227:
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291:BT Archives online image gallery
127:Anglo-American Telegraph Company
496:Concert Communications Services
83:International Telegraph Company
2402:Business and industry archives
511:International Network Services
176:Post Office Telecommunications
1:
1028:Digital Access Carrier System
385:BT Business and Public Sector
2309:Telecommunication portal
2090:Telecommunications equipment
1190:BT Sport Action Woman Awards
907:Post Office Research Station
768:Madley Communications Centre
763:Guardian Exchange Manchester
286:BT Archives online catalogue
69:Major historical collections
1826:Alexander Stepanovich Popov
877:Kingsway telephone exchange
244:Partnerships and governance
87:Submarine Telegraph Company
2443:
1530:Telecommunications history
1159:Electric Telegraph Company
823:Wotton-under-Edge BT Tower
158:National Telephone Company
79:Electric Telegraph Company
75:Electric Telegraph Company
2297:
2138:Public Switched Telephone
1950:telecommunication circuit
1911:Fiber-optic communication
1656:Francis Blake (telephone)
1451:Optical telecommunication
1223:
902:Sheffield Telephone House
882:Leafield Technical Centre
854:Anchor telephone exchange
551:
395:BT Wholesale and Ventures
281:BT Archives official site
229:Director telephone system
115:British Telegraph Company
111:Eastern Telegraph Company
2049:Orbital angular-momentum
1486:Satellite communications
1325:Communications satellite
1023:Advanced Mobile Location
1008:British telephone socket
998:BT site engineering code
257:corporate responsibility
146:United Telephone Company
1928:Molecular communication
1751:Gardiner Greene Hubbard
1580:Undersea telegraph line
1315:Cable protection system
1185:BT Digital Music Awards
1018:Customer Service System
301:Connected Earth website
248:It is a partner in the
2070:Communication protocol
1856:Charles Sumner Tainter
1671:Walter Houser Brattain
1616:Edwin Howard Armstrong
1424:Information revolution
917:Criggion Radio Station
818:Tolsford Hill BT Tower
808:Sutton Common BT Tower
23:
2044:Polarization-division
1776:Narinder Singh Kapany
1741:Erna Schneider Hoover
1661:Jagadish Chandra Bose
1641:Alexander Graham Bell
1372:online video platform
803:Stokenchurch BT Tower
728:BT Tower (Birmingham)
202:telephone directories
21:
1886:Vladimir K. Zworykin
1846:Almon Brown Strowger
1816:Charles Grafton Page
1471:Prepaid mobile phone
1399:Electrical telegraph
1114:Packet Switch Stream
788:Heaton Park BT Tower
296:BT's heritage policy
2364: /
1836:Johann Philipp Reis
1595:Wireless revolution
1557:The Telephone Cases
1414:Hydraulic telegraph
1154:General Post Office
922:Rugby Radio Station
892:Stag Lane Aerodrome
748:Charwelton BT Tower
306:10 May 2007 at the
239:BT Archives website
215:Location and access
2368:51.5180°N 0.1165°W
2034:Frequency-division
2011:Telephone exchange
1881:Charles Wheatstone
1811:Jun-ichi Nishizawa
1786:Innocenzo Manzetti
1721:Reginald Fessenden
1456:Optical telegraphy
1289:Telecommunications
833:KX telephone boxes
798:Pye Green BT Tower
758:Goonhilly Cornwall
738:BT Riverside Tower
733:BT Tower (Swansea)
642:BT Superfast Fibre
390:BT Global Services
55:telecommunications
48:BT's privatisation
24:
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2085:Store and forward
2080:Data transmission
1994:Network switching
1945:Transmission line
1791:Guglielmo Marconi
1756:Internet pioneers
1621:Mohamed M. Atalla
1590:Whistled language
1255:
1254:
1137:
1136:
1003:BT Speaking Clock
970:
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927:Microwave network
828:Red telephone box
813:Tinshill BT Tower
723:BT Tower (London)
685:
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2178:Notable networks
2168:Wireless network
2108:Cellular network
2100:Types of network
2075:Computer network
1962:Network topology
1876:Thomas A. Watson
1731:Oliver Heaviside
1716:Philo Farnsworth
1691:Daniel Davis Jr.
1666:Charles Bourseul
1626:John Logie Baird
1335:Data compression
1330:Computer network
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912:Portishead Radio
793:Purdown BT Tower
753:Faraday Building
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1651:Tim Berners-Lee
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1419:Information Age
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1200:Connected Earth
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318:Distant Writing
308:Wayback Machine
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250:Connected Earth
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184:British Telecom
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199:United Kingdom
195:family history
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2005:
2002:
2000:
1997:
1996:
1995:
1992:
1988:
1985:
1984:
1983:
1980:
1978:
1975:
1973:
1970:
1969:
1967:
1965:and switching
1963:
1959:
1951:
1948:
1947:
1946:
1943:
1939:
1936:
1935:
1934:
1931:
1929:
1926:
1924:
1921:
1917:
1916:optical fiber
1914:
1913:
1912:
1909:
1907:
1906:Coaxial cable
1904:
1903:
1901:
1899:
1893:
1887:
1884:
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1879:
1877:
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1869:
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1849:
1847:
1844:
1842:
1839:
1837:
1834:
1832:
1829:
1827:
1824:
1822:
1821:Radia Perlman
1819:
1817:
1814:
1812:
1809:
1807:
1804:
1802:
1799:
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1739:
1737:
1734:
1732:
1729:
1727:
1724:
1722:
1719:
1717:
1714:
1712:
1711:Lee de Forest
1709:
1707:
1706:Thomas Edison
1704:
1702:
1699:
1697:
1696:Donald Davies
1694:
1692:
1689:
1687:
1684:
1682:
1681:Claude Chappe
1679:
1677:
1674:
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1538:
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1533:
1531:
1528:
1526:
1525:Smoke signals
1523:
1519:
1516:
1514:
1511:
1509:
1506:
1505:
1504:
1503:Semiconductor
1501:
1497:
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1387:
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1362:Digital media
1360:
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1041:
1039:
1036:
1034:
1031:
1029:
1026:
1024:
1021:
1019:
1016:
1014:
1013:Cable jetting
1011:
1009:
1006:
1004:
1001:
999:
996:
994:
991:
990:
988:
984:
981:
973:
963:
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948:
945:
943:
940:
938:
935:
933:
930:
928:
925:
923:
920:
918:
915:
913:
910:
908:
905:
903:
900:
898:
897:Marland House
895:
893:
890:
888:
887:Mondial House
885:
883:
880:
878:
875:
873:
872:Horwood House
870:
868:
867:
862:
860:
857:
855:
852:
851:
849:
845:
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774:
771:
769:
766:
764:
761:
759:
756:
754:
751:
749:
746:
744:
743:Stadium House
741:
739:
736:
734:
731:
729:
726:
724:
721:
719:
716:
714:
713:Baynard House
711:
709:
708:Adastral Park
706:
705:
703:
699:
696:
688:
678:
675:
673:
670:
668:
665:
663:
660:
658:
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618:
612:
609:
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602:
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587:
584:
582:
579:
578:
576:
572:
569:
561:
556:
542:
539:
537:
534:
532:
531:Swindon Cable
529:
527:
524:
522:
519:
517:
514:
512:
509:
507:
504:
502:
499:
497:
494:
492:
489:
487:
484:
482:
479:
477:
474:
472:
469:
464:
459:
458:
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454:
452:
449:
447:
444:
442:
439:
438:
436:
432:
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421:
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411:
408:
406:
403:
401:
398:
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388:
386:
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378:
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375:
371:
368:
360:
356:
349:
344:
342:
337:
335:
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326:
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316:
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309:
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302:
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297:
294:
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289:
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282:
279:
278:
274:
270:
267:
266:
262:
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240:
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222:
214:
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209:
207:
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200:
196:
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177:
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171:
167:
163:
159:
155:
151:
147:
143:
139:
134:
132:
128:
124:
120:
116:
112:
108:
104:
100:
96:
92:
88:
84:
80:
76:
68:
66:
64:
60:
56:
51:
49:
45:
41:
40:public sector
37:
33:
29:
20:
16:
2349:
2021:Multiplexing
1896:Transmission
1861:Nikola Tesla
1851:Henry Sutton
1806:Samuel Morse
1736:Robert Hooke
1701:Amos Dolbear
1636:John Bardeen
1555:
1535:Telautograph
1439:Mobile phone
1394:Edholm's law
1377:social media
1310:Broadcasting
1245:
1233:
1174:
1094:Go!Messenger
962:UK-Belgium 5
865:
677:Merlin M4000
672:Micronet 800
667:Telecom Gold
606:BT Smart Hub
586:EE Broadband
581:BT Broadband
486:O2 (Germany)
481:O2 (Ireland)
471:Manx Telecom
461:merged into
366:subsidiaries
254:
247:
236:
233:
221:High Holborn
218:
210:
188:
181:
174:
135:
72:
52:
27:
25:
15:
2371: /
2221:NPL network
1933:Radio waves
1871:Alfred Vail
1781:Hedy Lamarr
1766:Dawon Kahng
1726:Elisha Gray
1686:Yogen Dalal
1611:Nasir Ahmed
1545:Teleprinter
1409:Heliographs
1175:BT Archives
657:BT MyDonate
501:Telecomsoft
400:BT Research
380:BT Consumer
259:programme.
223:in central
131:Post Office
28:BT Archives
22:BT Archives
2386:Categories
2356:51°31′05″N
2267:Antarctica
2226:Toasternet
2148:Television
1631:Paul Baran
1563:Television
1547:(teletype)
1540:Telegraphy
1518:transistor
1496:Phryctoria
1466:Photophone
1444:Smartphone
1434:Mass media
975:Programmes
694:facilities
662:BT MyPlace
652:BT Voyager
632:BT Highway
611:TNT Sports
456:Madasafish
420:BT Ireland
2359:0°06′59″W
2251:Americas
2240:Locations
2211:Internet2
1972:Bandwidth
1676:Vint Cerf
1573:streaming
1551:Telephone
1491:Semaphore
1382:streaming
1180:BT Museum
979:standards
866:Sovereign
718:BT Centre
690:Buildings
637:BT Mobile
627:BT Fusion
591:EE Mobile
441:BT Marine
425:BT Italia
405:Openreach
362:Divisions
269:BT Museum
206:microfilm
191:genealogy
63:telephone
59:telegraph
50:in 1984.
2397:BT Group
2319:Category
2206:Internet
2196:CYCLADES
2113:Ethernet
2063:Concepts
1987:terminal
1938:wireless
1761:Bob Kahn
1604:Pioneers
1429:Internet
1320:Cable TV
1234:Category
1149:BT Group
1109:N3 (NHS)
1048:ADSL Max
1043:System Y
1038:System X
952:CANTAT-2
567:services
563:Products
541:Open....
536:6GMOBILE
446:dabs.com
355:BT Group
304:Archived
263:See also
125:and the
38:and its
2339:Commons
2329:Outline
2282:Oceania
2201:FidoNet
2186:ARPANET
1999:circuit
1568:digital
1297:History
1246:Commons
1142:History
1119:Prestel
1072:Defunct
1063:YouView
1058:1-5-7-1
1053:Redcare
993:BT 21CN
986:Current
701:Current
620:Defunct
601:EE WiFi
574:Current
526:LineOne
521:Telfort
516:Dialcom
476:O2 (UK)
463:Plusnet
415:Plusnet
373:Current
32:archive
2277:Europe
2247:Africa
2231:Usenet
2191:BITNET
2128:Mobile
2004:packet
1513:MOSFET
1508:device
1305:Beacon
1205:People
1104:NHSnet
947:TAT-14
847:Former
838:LinkUK
506:Tymnet
491:Ribbit
434:Former
225:London
30:is an
2260:South
2255:North
2216:JANET
2153:Telex
2143:Radio
1982:Nodes
1977:Links
1898:media
1476:Radio
1461:Pager
1389:Drums
1355:video
1350:image
1340:audio
1195:Buzby
1168:Other
957:SAT-2
942:TAT-9
937:TAT-8
932:TAT-1
596:EE TV
2272:Asia
2158:UUCP
2118:ISDN
451:Hibu
193:and
168:and
61:and
26:The
2163:WAN
2133:NGN
2123:LAN
1404:Fax
1345:DCT
1129:TXK
1124:TXE
977:and
864:CS
692:and
565:and
364:and
89:,
2388::
410:EE
231:.
172:.
164:,
160:,
156:,
152:,
148:,
144:,
140:,
121:,
117:,
113:,
109:,
105:,
101:,
97:,
93:,
85:,
81:,
36:BT
2290:)
2286:(
1281:e
1274:t
1267:v
347:e
340:t
333:v
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