How to consider carbon through procurement

So, the largest part of the NHS carbon footprint is procurement- how do we as GPs make a difference to that? Here are some clues..

Department of Health guidance- 'Procuring for Carbon Reduction'

http://www.dh.gov.uk/health/2012/01/procuring-carbon-reduction/

Department E-learning programme on carbon literacy in procuring- takes 4 hours to work through this but could arguably be worth lots of CPD points..?

http://sd.defra.gov.uk/advice/public/nsppp/carbon-learning