Failing bush in a shock absorber, bent shock, broken or soft gearbox/ engine mount, centre tunnel just touching gearbox, the list goes on, get underneath and start looking , anything shiny ( rubbing) that shouldn’t be?
Do you notice if the heat plugs light is working in dash, it’s unlikely to engage starter until it’s run its heat cycle , the colder it is, the longer the heat cycle
lucky to get anything back from wickford camps, even tho their residents are recognisable on farm cctv footage, to the boys in blue it’s a no go zone allegedly
Look at the sump, pipework, does it show impact damage, or damage from an internal failure? It should be self evident, my thoughts are the crankshaft snapped when you stamped on the brakes whilst it was powered up, sorry.