VI-ing from pictures and videos. I got a pretty good idea what they are but all suggestions are welcome.
Richard Hammond: ESI Dominant (isfj). Looks a bit like an easygoing Jose Mourinho.
James May: EII Normalizing? (infj), possibly LII. Definitely polr eg. Hammond crashes into the back of his car and James doesn't do anything. Captain Slow. Is the quieter of the two and does not get involved in Clarkson v Hammond scuffles. Does not eat paper and dislikes hammers.
Jeremy Clarkson: SLE harmonic? (estp). Power. I'll need a hammer. Let me get a bigger hammer.
SLE, ESI and EII. Interesting group dynamic isn't it?