If you like Humph on radio have you listened to Mel Hill, he is also knows a lot about jazz, and plays similar music.
He does a 2 hour show each week on Radio Stoke, but you can listen to it on the internet.
I listen to both each week (on headphones at work) and have to say overall I prefer Mel Hill.
Got to this web page
http://www.bbc.co.uk/radio/
In the "genre" area on the right select "Music", then "Jazz".
You get a list of Jazz programs, including Best of Jazz.
Mel Hill is at the bottom of the alphabetical list, give it a try, I think you will like it.