That is a regular visitor to Blackbushe , seen it many times. Not the first time a biz jet has gone off the far end of RWY25 a Beechcraft light jet just missed the fuel dump on the other side of the runway some years ago.
Not a very overrun friendly area at the western end of this runway with the auction site to the right and a busy car park for auction customers pretty much right on the runway end and unless it was going pretty slowly I too am fearful about the prospects for survivors.
PB