Comment by foldr

The flip side of this is that convictions under the Communications Act have gone down compared to 2010, so it's a mixed picture:

https://lordslibrary.parliament.uk/select-communications-off...

It is hard to get good data on this, but it is probably a combination of overzealous policing (which is indeed bad) and an increase in arrests for behavior that arguably is a police matter, such as domestic abuse, harassment, etc. I would not be surprised to discover that there is more online harassment now than there was in 2010.