Well the one played by Harry Enfield, liked young men, and I think Freeman was gay. He also spoke like him. In one of the(special edition) episodes, the one played by Paul, kept on playing sentimental tunes after his break up. I took this to be Blackburn.
Mind you, they may just be a parody of...
I remember his marriage break up with Tessa (I think her name was). He practically had a breakdown on his radio program, playing songs that had a "Special Significance" for him.