The audience peaked when the King was crowned in Westminster Abbey just after midday.
The King's Coronation was watched by an average of 18 million viewers in the UK, overnight figures have shown.
Viewing peaked at 20.4 million as the King was crowned just after midday, audience measurement group Barb said.
United Kingdom Latest News, United Kingdom Headlines
Similar News:You can also read news stories similar to this one that we have collected from other news sources.
Coronation live: King Charles III takes Coronation oath at Westminster Abbey - BBC NewsA ceremony full of music and symbolism is taking place, as an audience including Princes William and Harry look on.
Read more »
How to watch the Coronation of King Charles III and TV scheduleHere's how to follow the UK's first coronation in 70 years.
Read more »
Presenting the official emblem of King Charles III’s Coronation, designed by LoveFromThe Coronation Emblem, incorporating rich symbolism and the very first typeface from Sir Jony Ive’s LoveFrom, is designed to stand the test of time
Read more »
Darwen youngsters celebrate King Charles III's upcoming coronation in styleTo embrace King Charles' passion for photography, the school also set up a 'photo booth'
Read more »