OK a little behind the times, but I’ve just found this scan of a poster I did for university on how Clinical Commissioning Groups work. As, I’m sure you know, The CCG’s took over from the Primary Care Trusts (PCT) in the NHS from April 2013. I did this poster to help me, I didn’t know what the difference between CCGs and PCTs (apart from their names) so I was unsure about how this would impact the NHS and ultimately me when I qualify. I also got some good no-nonsense information from Alaxia on http://alaxia.hubpages.com/hub/The-Health-and-Social-Care-Bill-2011-A-Beginners-almost-unbiased-Guide
Hope you find it helpful too.