Economics and Politics are the social sciences whilst Biology and Physics are natural sciences.
You can do something clever like B.Sc. Geography at King's College, London
focusing on physical geography joint with B.A. International Relations at SOAS
(School of Oriental and African Studies) with modules of:
- Geographical Foundations: the making of the modern world
- The Changing Natural Environment
- Introduction to International Relations
- War and the International
- Physical Geography: Earth Surface Processes and Management
- Globalisation and Global Governance
- International Relations of the Middle East
- Environmental Risk, Governance and Society
UCL have a masters in the Economics and Policy of Energy and the Environment
This would be great for a career at the Department for Energy and Climate Change and multi-national companies like BP and Centrica (British Gas). You could also work in defence industries and policy regarding the geopolitics of oil and energy and encompassing the area of energy security
When you are in London you should visit the Royal Geographical Society and the Geological Society of London as both are fascinating and full of resources and are always doing events so you can network with academics and professionals.