Here is a YouTube channel containing a series of Physics videos which are intended to give a basic introduction to the subjects covered.
Author: Dr PhysicsA has a BSc (physics) and PhD (nuclear physics) from King's College, London.
http://www.youtube.com/user/DrPhysicsA
The videos are organised into playlists:
A Level Physics Revision A Level Physics Exam Questions Examples
Electricity & Magnetism Thermodynamics Classical Mechanics Cosmology Atomic Physics
Quantum Mechanics Nuclear Physics Particle Physics Special & General Relativity