Alex, perhaps it's my 2 years in London influencing me (I love BBC Radio), but I think your voice is perfectly suited to this. Clear, articulate... no "ums" or "ahs". Great work, I really enjoy listening to these.
Thanks Jeremy! I'm getting more confident and a bit better. But here's a secret for you - I delete out a quite a few ums! Mostly mine, also I crop out from guests, along with 'y'know' and 'like'. I find it immensely satisfying!
I would suggest that anyone interested in radio production or podcasting listen to this piece from On The Media about how they do "internal edits" at NPR. There's a great example of Bob Garfield just stumbling blindly around a question that gets cleaned up into something quite articulate.