Much as I'd like to think that signing this would make a difference, it won't :(
Theresa May has been pushing for this legislation (or variants thereof) for years now. The existing powers which this bill replaces expire at the end of the year, and so the line "We cannot allow {terrorists|child pornographers|money launderers} a safe space to hide online" will be trotted out, and anyone arguing against it will be labelled soft on terror, and unpatriotic...
Eh, don't be too quick to write off the idea of activism here.
Expressing your opposition to this bill is important even if you don't believe there's a real chance of it being overturned.
In 6 months, snoopers will probably ask politicians for more power, and politicians will look back on what happened today. We want them to remember that it was difficult and had a high cost in political capital. Not that they snuck it in and everyone rolled over instantly.
Theresa May has been pushing for this legislation (or variants thereof) for years now. The existing powers which this bill replaces expire at the end of the year, and so the line "We cannot allow {terrorists|child pornographers|money launderers} a safe space to hide online" will be trotted out, and anyone arguing against it will be labelled soft on terror, and unpatriotic...