Here's another writer's blog, this one by James Henry who was part of the team who wrote Green Wing. His blog isn't as focused on the craft as is Ms Espenson's, but he does provide occasional glimpses of what it's like trying to get stuff commissioned by TV companies in the UK.
Depressingly difficult, as you'd imagine.
I've (nearly) finished a new version of the Grey Bloke pilot. The main story is all wrapped up and ribboned, and now I'm just sellotaping on a sub plot that's not strictly necessary but that might be amusing. Something to discard later if the script is too long, basically.
And a new short should be up on YouTube early next week.