Children Calling Home was an English-language radio programme, with the first episode on Christmas Day, 25 December 1940 as a collaboration between the United Kingdom's BBC's Home Service, CBC of Canada, and NBC of the United States, and broadcast simultaneously in all three countries.
[1] The presenter for the BBC was Roy Rich; their producer was Enid Maxwell.
[2][3] The programme allowed children evacuated to the host countries from the UK, due to bombing during World War II, to talk with their parents.
[4] The series continued, with various permutations of the involved networks, until at least 31 May 1944.
[5] The journalist Mark Lawson identifies it as the first example of co-production.