If you're interested in sitcom writing, the latest episode of our podcast about comedy (What Are You Laughing At?) - particularly the second half - is very much for you...
Show regulars Dave Cohen and James Cary (whom I'm sure you know from their long list of writing credits) are joined by Andrew Ellard. If you don't recognise his name, he's the man that people like Graham Linehan, Doug Naylor, Miranda Hart and Peter Serafinowicz turn to when they want to sharpen their scripts.
Worth a listen I might suggest for some tips, plus insight into working on shows like Red Dwarf: https://www.comedy.co.uk/podcasts/british_comedy_podcast/11_andrew_ellard/