"Determined teenagers will find ways to access pornography," a BBFC spokesman told the Telegraph. "However, it will mean young children can no longer stumble across porn on commercial pornographic websites."

Who accidentally stumbles across porn on commercial pornographic websites? Are they going there looking for something else? That doesn't happen. It's just one of the excuses people come up with when they're caught with porn that the rest of us pretend to believe in order for them to save face. Yes, of course your computer was hacked by some nefarious people who planted porn in your browser history. I do believe you that some other person must have used your computer to look at porn without asking first. You did pick up a virus somewhere that downloaded several gigs of neatly organised porn to your hard drive. Happens all the time.