I would prefer to find a thread telling us that Mike Harding was going to use his show to play some British Folk Music

This is called 'howling at the moon'. However, to be fair, I haven't yet heard this Rubber Folk CD:

Drive My Car - Jim Moray
Norwegian Wood - Waterson:Carthy
You Won't See Me - Paul Brady
Nowhere Man - Chris While
Think For Yourself - Coope Boyes & Simpson
The Word - Johnny Dickinson
Michelle - Ralph McTell
What Goes On - Boo Hewerdine & Eddi Reader
Girl - John Tams
I'm Looking Through You - Martin Simpson
In My Life - June Tabor
Wait - Cara Dillon
If I Needed Someone - Show Of Hands
Run For Your Life - Spiers & Boden

but only two are by Irish artists and none are performed by Kate Rusby. This must be some kind of record.