Updated October 2017
Useful links:
Trilogy and Separate Biology
http://www.aqa.org.uk/subjects/science/gcse/combined-science-trilogy-8464/assessment-resources
http://www.aqa.org.uk/subjects/science/gcse/biology-8461/assessment-resources
Separate Chemistry
http://www.aqa.org.uk/subjects/science/gcse/chemistry-8462/assessment-resources
Separate Physics
http://www.aqa.org.uk/subjects/science/gcse/physics-8463/assessment-resources