Student leaders on Hong Kong protests

In the last three months, Hong Kong has been shaken by mass demonstrations. They began with demands to scrap a controversial extradition bill. They continue with demands for full democratic rights in former British Colony and they are seen as a test case: how far are citizens prepared to go, and how much force is China prepared to use to stop them.

I spoke to Kex Leung, Joy Siu and Sunny Cheung, three student leaders who are visiting London to drum up support from MPs. I began by asking how important it is that the international community, and in particular the British government, support them.