The presentations that were shown at the economics conference on Tuesday are available to view at the following address. As the conference was a two-day conference, Monday's presentations are also on there and they may be beneficial to you.
http://www.nottingham.ac.uk/economics/prospective/undergraduate/6th-form-conference/index.aspx
http://www.nottingham.ac.uk/economics/prospective/undergraduate/6th-form-conference/index.aspx