According to a survey, the average times at which UKians switch off include:
Reading - 14mins
Watching TV or films- 15mins
Virtual work call - 11mins
Face-to-face meeting - 13 mins
Writing an important e-mail - 12 mins
Listening to a podcast - 11 mins
Meditating - 10 mins
So if you want your story to appeal to Ukian readers, you're probably best keeping chapters to under 14 mins reading time.
AJ