Going to the doctor once a year is pretty important. You need to make sure you're in peak physical condition! Unfortunately, though, when it comes to people's teeth, they sometimes fall a bit behind in keeping up with personal hygiene.
You have to love the Brits, they are always painted as so nice and even the most boring interview may be boring, but they seem so engaged with the questions asked. Could it be because they have bad teeth and smiling makes them self-conscious...