The BBC has published their writersroom submission windows for 2015, with some slight tweaks to their model. Rather than grouping submissions strictly by medium as in 2014 (with different entry dates for radio/stage, screen, etc), they will have two submission windows: a window in the spring for all comedy scripts, and a second window in the autumn for drama.
They will be accepting comedy scripts from 9 March 2015 to 2 April 2015, so start polishing those punchlines now! We’ll post more details about the submission process closer to the time.
Source: BBC Writersroom email