Restrict broadband usage

[#1]

DAK, is there a way for a home user to 'restrict broadband usage'.
i.e. throttle back on peer-to-peer or data streaming.

[#2]

Some software used for P2P (most torrent software for example) has settings for maximum up & down rates, possibly also time restrictions.
My son uses torrent software for certain (legitimate) game downloads (micro-torrent I believe), I have found the settings to restrict that.

[#3]

Depending on your account type you can use the manage my usage tool on the portal to set a cap so that you don't exceed your monthly allowance.
Also using view my usage is a good way of monitoring your usage habits to make sure you don't use too much too quickly if that's what you're worried about.

[#4]

You used to be able to apply blocking using the Surf option: https://portal.plus.net/surf/
I have a feeling this doesn't work these days.

[#5]

It probably won't work. I'm referring to more general ways of restricting usage rather than specifically limiting P2P.