<Table> <Tr> <Td> </Td> <Td> This article needs additional citations for verification . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed . (January 2017) (Learn how and when to remove this template message) </Td> </Tr> </Table> <Tr> <Td> </Td> <Td> This article needs additional citations for verification . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed . (January 2017) (Learn how and when to remove this template message) </Td> </Tr> <P> The BBC Home Service was a British national radio station that broadcast from 1939 until 1967, when it became the current BBC Radio 4 . </P> <P> Between the 1920s and the outbreak of the Second World War, the BBC developed two nationwide radio services, the BBC National Programme and the BBC Regional Programme . As well as a "basic" service programmed from London, the Regional Programme included programming originating in six regions . Although the programme items attracting the greatest number of listeners tended to appear on the National, the two services were not streamed: they were each designed to appeal "across the board" to a single, but variegated, audience by offering between them and at most times of the day a choice of programme type, rather than simply catering, each of them exclusively, to two distinct audiences . </P>

When did the home service became radio 4