UKRO have created a very helpful and short guide to Horizon 2020 which is available on their portal. BU subscribes to the UKRO services and therefore all BU staff have access to this (simply register for an accout if you haven’t already and you will also get very useful updates from them too!).
This hyperlink should take anyone with an account straight to it, but if you have any problems, just log in and go to ‘Future Funding’ in the left hand navigation. The three thematic areas all have their own pages and the useful over view of all contains the guide.