The 'charity' Common Purpose is a key organisation in the subversion and subsequent transformation of Britain. It's inextricably linked to the wider New World Order agenda, in particular the European Union.
For more information on this Marxist front group that is 'training the leaders of tomorrow', the following websites are recommended. CPExposed and Stop Common Purpose.
The person credited with bringing Common Purpose to more people's attention is former naval officer Brian Gerrish. He's made several excellent speeches on this and other subjects, most of which you can find on the BBC5.tv YouTube page. The video below has Brian giving a short summary of how Common Purpose links into the wider agenda.