BT Archives

We're in it together' Post Office Public Relations poster

We preserve and provide access to BT's heritage from 1846 to today. The story of how the World's oldest communications company has used the power of communications to make a better world.

Records produced before the date of privatisation are public records under the Public Records Acts, 1958 and 1967. We undertake the company's statutory responsibilities under these acts to preserve and make available BT’s archives to members of the public after 20 years. BT Archives has been appointed an "official place of deposit for public records" for this purpose by the Lord Chancellor. BT Archives is also approved by The National Archives National Advisory Services as meeting their standard for archives repositories.

We also act as the corporate memory for the BT group of companies; vital historical information is preserved and made available where appropriate to aid BT's performance, raise the company profile and support BT as one of the world's leading communications services providers. 

Visiting us

BT Archives has been located in its purpose built repository in Holborn Telephone Exchange since July 1997. This facility reflects BT's commitment to preserving and giving access to its unique and priceless archival collections.

Opening days: Our public search room is open on Mondays and Tuesdays, 10.00am - 4.00pm except for public holidays and on occasions when scheduled events are occurring (the latter will be published here).

2016/17 Scheduled closures:

  • Monday 26th and Tuesday 27th December (UK public holidays)
  • Monday 2nd January (UK public holiday)

The search room has limited seating and we cannot guarantee admission without an appointment. To avoid disappointment please book in advance by e-mailing

Customers should note that we cannot undertake research on their behalf.

Important security information for visitors: First-time visitors must bring photographic and suitable proof of address identification. We regret that visitors unable to meet these conditions cannot be admitted.


Location map


BT Archives
Third Floor
Holborn Telephone Exchange
268-270 High Holborn

Helpdesk: (+44) 020 7440 4220
Fax: (+44) 020 7242 1967

Getting there

British Rail: City Thameslink (Holborn Viaduct entrance)

Underground: Holborn (Piccadilly and Central Lines), Chancery Lane(Central line) or Farringdon (Circle or District Lines)

Bus routes: (High Holborn) 8, 242, 25, 501, 521 (Holborn Kingsway) 1, 68, 91, 168, 171, 188, 501, 505, 521, X68

By car: NCP Car Parks at: Holborn, Museum St WC1; Brunswick Square WC1; Russell Court, Woburn Place WC1; Caxton House, Cowcross St, EC1; Cardinal House, Cowcross St, EC1; Bloomsbury Square Car Park, WC1