I have downloaded the script of Merlin episode 3 and have watched 5 minutes of the episode and the video and the script are exactly the same.
The only difference was that the Merlin script was more brief and compact than the actual episode.By looking at the script and the episode this has given me an idea of how I'm gong to wright my script. It has told me t wright in small points and to get straight to the point when in writing thing down.
Script: http://www.bbc.co.uk/blogs/writersroom/2011/10/new_script_merlin_-_the_wicked.shtml
Merlin episode: http://www.bbc.co.uk/iplayer/episode/b01692qr/Merlin_Series_4_The_Wicked_Day/
