The obvious problem with the UK approach is that it's one-size-fits-all so a household of adults, teens and young children would have a single setting -- likely to protect the youngest children -- that will affect all users.
Pornography cannot exist in the workplace if high levels of productivity are desired. It distracts workers from their jobs and has the potential to offend other employees if they happen to catch a glimpse.
Students can make the most of their commute to school with one simple tool: a smartphone or mobile device such as an iPad. These devices allow students to be more effective learners than any generation before.