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_28794 ( "Episode" real, "First broadcast Denmark ( DR1 )" text, "Official TNS Gallup ratings" real, "First broadcast UK ( BBC Four )" text, "Official BARB ratings" real )

### Question ###
When was the first UK broadcast when the official Barb ratings was 1085000?

### Accurate SQL ###

SELECT "First broadcast UK ( BBC Four )" FROM table_28794 WHERE "Official BARB ratings" = '1085000'