Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_9770 ( "Episode #" text, "Original airdate (UK)" text, "Episode title" text, "Doctor Who episode" text, "Webcast link" text )

### Question ###
Which Doctor Who episode has a Original airdate (UK) of dvd only?

### Accurate SQL ###

SELECT "Doctor Who episode" FROM table_9770 WHERE "Original airdate (UK)" = 'dvd only'