Declining a slim 19% at the weekend, The Lego Batman Movie tops the UK box office chart with £4.44m, and £17.45m after 12 days of play.
Box office fell by a predictably steep 55% in its second session, but Fifty Shades Darker held on to second place in the chart.
Takings are now £16.71m, which compares with £25.24m for Fifty Shades of Grey at the same stage of its run.
In the all-time chart for 18-certificate titles, The Wolf of Wall Street (£22.7m) and Gone Girl (£22.3m) currently sit behind Fifty Shades of Grey (£35.1m).