weren't they only proposed, and never actually came into effect.
No they are law in the criminal justice and immigration bill 2008. They begin enforcement this month.
Theres technology publicly available which can keylog you without any hardware or software - they could just sit in a car outside and read whats on your monitor and what you are typing. I don't mean over wireless or anything - it works by detecting radiation from devices.
Lcd's don't emit the radiation, that only worked for crt monitors, supposedly anyway, I don't imagine it ever having been practical.