1. Enfield Exchange

Aleks Krotoski explores technological innovations and cultural events from the age of communication.

"Hello Girls"

In 1960 the women telephonists of the Enfield exchange said goodbye to the last manual telephone exchange in Greater London.

For decades they had put through calls using this plugboard machine, providing a polite and friendly voice to any caller.

Aleks Krotoski uncovers the exchange's hidden histories and how it provided a new kind of employment for young women.

Part of the Enfield Exchange is on display in the new Information Age gallery at the Science Museum in London. The gallery tells the story of the evolution in how we communicate with each other. The objects in the exhibition represent cultural moments from the last 200 years - not just technological innovations.

We also hear from the women who worked as telephonists about the relationship between the supervisors and operators, some of whom were only 15 years old, the aches and pains the plugboard caused and the prestige brought by a job with the GPO.

With the expertise of:

* The Science Museum's Keeper of Technology, Dr Tilly Blyth
* Curator of Communication, John Liffen,

Producer: Deborah Cohen

First broadcast on BBC Radio 4 in October 2014.