Can I watch BBC One with the app FilmOnTV installed on my new laptop?

I recently purchased a Lenovo computer (the OS is Windows 8), and there are a fews apps already installed, including one called FilmOnTV. There are dozens of channels, some with a little "Free" icon on top.
I would like invite a friend over to watch the new Doctor Who episode that will air on Saturday on BBCOne, but since this channel doesn't seem to be "Free", I'm afraid that it will stop in the middle of the episode and ask me to pay to see more. (That would be embarrassing, since I can't afford it.)
If you have any info on the lenght of time during which I can watch a channel that is not "Free", that'd be great!

Try a service called TVCatchUp, they have an app + an online service you can watch all the UK channels on for free.

Unfortunately if you are not in the UK, you are slightly stuffed.

Give it a try and see if you like it. They usually give you ads before streaming the channel. I have not ever seen it interrupt with ads before.