Age restricted filtering of the internet is the default on all UK mobile networks as far as I know, it might even be the law that it defaults to filtering. You have to actually ring them up and say you want the filtering switched off or some do it as part of the sign up process.

All the routers also come with filtering settings as well and ISPs ship with the filtering on by default, since that is the law and has been for several decades.

It's generally just a toggle in the account settings so no need for a phone call, but yes. It is default-on when you take out a new broadband connection or mobile phone contract.

disgusting

my dream is when ISPs are allowed to sell this, but not allowed to call it internet access.