Later

Many things about radio listening are different in the USA, but it's likely that new figures from Edison Research will apply to the UK. 

Before the pandemic, the Edison team calculate that by 7.15am, 50% of Americans had listened to some form of audio.  In the lockdowns and homeworking of the pandemic in 2020, that time shifted to 8.30am. Their latest research show that time to be 7.45am.  If repeated here, it doesn't bode well for breakfast show ratings, traditionally where stations build and hope to retain audiences.