I assume most people here already are registered but just in case: here’s the link.
Wow. Apparently that changed in 2013 as well.
Honestly don’t blame folks for not knowing this. With all the voter ID stuff it really was not made clear to the public that a fine was added. Most brits grew up in a system where it was entirly optional.
There really has been no attempt at publishing this change.
It only applies if a registration officer specifically asks you to register. And honestly that has been very rare up to now. Makes me wonder why the tories felt this was needed.