Write a script. The BBC only accepts completed scripts for consideration, not project proposals. Scripts must be a minimum of 30 pages in length and should include your current contact information. As of 2010, the BBC accepts scripts for TV sitcoms, film, radio sitcoms, children's sitcoms/dramas and TV dramas. The script must be in proper screenplay formatting. Software, such as Final Draft or ScriptSmart, automatically formats your script based on the intended genre.
Proofread your script three times and make any alterations. After you have proofed your script, allow several friends and family members read it and give their opinions regarding the story flow and character development. Once your script has been read by several people and you've asked their opinions and suggestions, make your final edits.
Print off the script and make sure every page is numbered and placed in correct order. If you are working on a series, only include the first episode. However, create an outline that describes subsequent episodes.
Write a cover letter describing your experience as a writer, as well as your intentions for submission. Include your contact information within this cover letter. Prior to mailing your script to the BBC, include a self-addressed stamped envelope to receive a response.
Mail your completed script and cover letter to:
BBC Writersroom
1st Floor, Grafton House
379 Euston Rd.
London
NW1 3AU
Wait one month for the initial response. You will be sent an acknowledgement card from the BBC Writersroom after they have received and processed your script. If you have not heard anything after one month, contact the Writersroom so they can double-check the status of your script. Your script will then be reviewed by professional readers. Once in this stage, your script will be denied or passed on to a second reader. If the second reader finds your script promising, you will be asked to submit additional scripts or speak with the Development Manager for the BBC.