CREATE TABLE table_27319183_5 (episode VARCHAR, official_itv1_hd_rating__millions_ VARCHAR)

Which episode had an official ITV1 HD rating of 1.185 million?
SELECT episode FROM table_27319183_5 WHERE official_itv1_hd_rating__millions_ = "1.185"
SELECT "episode" FROM "table_27319183_5" WHERE "1.185" = "official_itv1_hd_rating__millions_"