I guess the below mentioned radio shows are what we're seeking to save; although the article is incomplete because it doesn't mention Folk Song Cellar nor Country Meets Folk:

From: Wiki - Folk Music of England

http://en.wikipedia.org/wiki/Folk_music_of_England

"The difficulty of gaining regular appearances on television in England has long meant that radio has remained the major popular medium for increasing awareness of the genre. The EFDSS sponsored the BBC Home Service radio program, As I Roved Out, based on field recordings made by Peter Kennedy and Séamus Ennis from 1952 to 1958, which probably did more than any other single factor to introduce the general population to British folk music in the period.[45] Also important were occasional radio shows, such as Lomax's Ballads and Blues, MacColl's Radio-ballads (1958–64) and The Song Carriers (1968). John Peel frequently included folk music of his Top Gear show on Radio One from 1968, but dropped it when punk arrived in the 1970s. The most consistent source of folk music on radio, has been BBC Radio 2. In 1967 "My Kind of folk" was broadcast on Wednesdays. In 1970 "Folk on Friday" began, presented by Jim Lloyd. In 1972 it became "Folk on Sunday". "Folkweave" was presented by Tony Capstick 1975-8. "Folk on Two" (Wednesdays) began in 1980. In 1998 Jim Lloyd retired from the programme and was replaced by Mike Harding. In 2007 it was renamed "The Mike Harding Folk Show". Ian A. Anderson, editor of "fRoots", also presented the occasional series for Radio Two. He hosted a World music programme on "Jazz FM" and then spent 10 years broadcasting on the BBC World Service. He currently hosts "fRoots Radio" on the web. For over twenty years, until 2006, Charlie Gillett presented World music on BBC London."