Downton Abbey and X Factor each drew 9.6 million average viewers for U.K. commercial broadcaster ITV1 Sunday night.
The data included people viewing with an hour delay on catch-up network ITV1+1.
The season's first X Factor live results show drew a peak audience of 11.4 million viewers Sunday night, up week-over-week. That marked the second-highest peak audience of the season so far for the music competition created by Simon Cowell.
The costume drama, meanwhile, reached a peak audience of 10.2 million viewers.
Last Sunday, Downton Abbey had averaged 10 million viewers in the U.K. That marked the show's third-highest ever ratings in the U.K.
