That's what would be reasonably expected, but it's not backed up by the information.
> The total arrest figures are likely to be far higher because eight forces failed to respond to freedom of information requests or provided inadequate data, including Police Scotland, the second largest force in the UK. Some forces also included arrests for “threatening” messages, though these do not fall under the specified sections. [emphasis added]
> The total arrest figures are likely to be far higher because eight forces failed to respond to freedom of information requests or provided inadequate data, including Police Scotland, the second largest force in the UK. Some forces also included arrests for “threatening” messages, though these do not fall under the specified sections. [emphasis added]
https://www.thetimes.com/uk/crime/article/police-make-30-arr... (https://archive.is/kC5x2#selection-3325.0-3325.335)