I have written and given several courses on special relativity aimed at bright students at the end of their AS (lower six) year, including one for the Senior Physics Challenge. I have also taught special relativity to the British team for the International Physics Olympiad. My notes on special relativity can be downloaded here, and I would also recommend looking at Sanjoy Mahajan's notes on space-time diagrams.

I gave a plenary lecture about the Cambridge approach to teaching science (the natural sciences tripos) at the Chalmers initiative seminar "at the interface between life and matter". There are a couple of photos of me in full flow here, and the slides can be downloaded here.

I supervise second year electromagnetism and classical dynamics at Cambridge University, but I don't have any teaching materials relating to that at the moment.