More than 14,000 people have so far seen the picture in Worthing, and its run has again been extended, to March 17.
Theatres manager Peter Bailey told the Herald: “There was a surge in audiences after the BAFTA awards last month, and now we are hoping that the Oscars’ success will produce a similar result.
“It is the second-highest film ever as regards audience numbers – we haven’t done so well since we screened Mama Mia! in 2008, which attracted some 22,000 people.
“But I don’t think that the King’s Speech will beat that figure.”
Colin Firth’s Oscar-winning portrayal of the stammering King George VI has so far helped to gross more than £75,000 for the Connaught cinema’s coffers.