I wasn't aware this was possible but apparently, it is! If you have a specific programme you want to not be available on Netflix then you can block it by name (rather than by content rating).
Here's an example;
I've done a search for Free Rein (nothing against this programme, I was just looking for an example!). You can see the result here;
You can see there is both Free Rein the series and Free Rein Valentines TV movie.
I'm going to test blocking the TV movie (as it's easier to see).
The first thing is to go into your account (top right) and then scroll down until you see "Profile and Parental Controls"-section. Find the profile you are using and click on the right arrow to expand the details and then click "change" in the Viewing Restrictions section.
You then need to enter your Netflix password in order to make changes.
You'll then be presented with something that looks like this;
The top part allows you to set the "maturity" ratings.
Beneath that is a "Title Restrictions for Andy" section. Here you can type the name of a title that you want to block (the auto-complete matches what you type to an existing Netflix title) and then you click save.
When I return to the main screen and attempt to search for Free Rein I now see this;
I still have access to the series "Free Rein" but I no longer even see the TV movie.
There are disadvantages to working this way; you can't pre-emptively block a title that isn't currently on Netflix. For example, if you're in the UK and you do a search for "Harry Potter" - you'll not find anything as the movies aren't available in the UK on Netflix yet.
