What can be done to fight an outbreak of online threats and bullying in the UK?

British Prime Minister David Cameron has called for a boycott of sites that allow cyberbullying, while asking for website operators to "step up to the plate" and show some responsibility.

A number of companies have pulled their ads from Ask.fm, the site where 14-year-old Hannah Smith was bullied before she committed suicide.

British MP Barry Sheerman wants to take action. On News Stream he said, "I would set up a commission and look at the responsibility of people who own and manage sites like Twitter and Ask.fm because they have responsibility."

"I would look at a range of options like a red button if you're being bullied, so immediately it flags you to a counselor - if you are a child - who can give you information, guidance and advice."

"Also, what we need to do is prosecute these people who cause an enormous disturbance to others as much mentally as physically."

Click on to hear more from Sheerman. What he reveals could be the beginning of one country's legislated approach to online abuse.