David Cameron has turned to Twitter to criticise Facebook over the social network's decision to allow shocking videos to be hosted on the company's pages.

In a case of using one social platform to comment on another, David Cameron, who has almost half a million followers said: "It's irresponsible of Facebook to post beheading videos, especially without a warning. They must explain their actions to worried parents."

Twitter declined to comment on what it thought about the PM using their social network to get the message across. 

Facebook though has said in response that it will be adding pre-play warnings to all videos that might have shocking footage.

"Facebook has long been a place where people turn to share their experiences, particularly when they’re connected to controversial events on the ground, such as human rights abuses, acts of terrorism and other violent events," a spokesman for the company told Pocket-lint.

"People share videos of these events on Facebook to condemn them. If they were being celebrated, or the actions in them encouraged, our approach would be different.

"However, since some people object to graphic video of this nature, we are working to give people additional control over the content they see. This may include warning them in advance that the image they are about to see contains graphic content."

Cameron and the government have long been fighting for a safer internet for families, including moves to try to put in place stronger blocks against adult content online, something that has caused huge debate, especially over whether such a plan is even technically possible.

As with all grey areas of what is and isn't acceptable the challenge for Facebook is how to handle extreme examples without breaking the system and removing those important use cases.

Cameron, no stranger to social media, was recently caught having a nap on Instagram, owned by Facebook, ahead of a his sister-in-law's wedding.