16m tune in to see Ennis take gold
More than 16 million people watched Jessica Ennis triumph in the heptathlon on an amazing night for UK athletics.
Overnight ratings showed 16.3 million viewers watched as Ennis powered to victory in the 800m and claimed the gold medal.
Even more tuned in to see Mo Farah win the 10,000m with 17.1 million watching - the biggest audience for the Games so far.
BBC Olympics boss Roger Mosey tweeted the "stunning viewing figures for last night's amazing athletics".
They also included an audience of 15.6 million for Greg Rutherford's long jump gold and 9.2 million for the women's team pursuit win.
Sunday night is likely to be another ratings winner with coverage of the men's 100m final on BBC1 from 9.45pm.
The Games have been a ratings winner for the corporation since they began with a peak audience of 26.9 million tuning into the opening ceremony.
Figures released by the corporation show record numbers of people watching the coverage online with its website recording a peak audience of 8 million - above the previous record of 5.7 million.
More than 1.5 million people have downloaded the BBC's Olympics app for their phone and around 17 million people have used one of the 24 red button streams.
The website has seen 29 million requests for its interactive video streams with video of Bradley Wiggins' win being the single most popular - with 729,000 requests.