Agree with all the comments. Tremendous effort by Everyman (guest setter John Finnemore??) to get some sort of Radio 4 reference into every clue or answer, but was it really worth it, given how much was sacrificed in terms of surface and clarity? Not to mention the fact that it's deeply unfair to the rest of the world's solvers. (Kudos Geeker - it's astonishing that you even got close, let alone finished it!)
Personally, I'm technically a DNF as I can't parse 26D at all, despite needing only one letter. Can anyone help?