100% a Brit car. Looks like he simply missed the turn in by possibly being distracted and got onto the filthy outside of the track with no grip.
My guess the passenger stuffed his ankle by trying to press the non-existant brake pedal, the shock through the bulkhead into his leg on impact doing the damage.
I might be wrong, but watching from the Clio there seems to be a bit of a shimmy before turn in, almost like he was attempting a Finnish flick to drift for the crowds??