SFFP
Mr Ellacott estimated the distance from himself to the crash site as not more than 100 yards - which is the normal length of a Soccer pitch. Mr Ellacott would have reached the crash in less than 1 minute.
Dalek
Mr Ellacott estimated the visibility as "nine or ten feet maximum" as the aircraft flew over him approx one second before impact. Impact speed was assessed as 150 kts which is 250 ft a second. 100 yards is 300 ft therefore they had 1.2 seconds to sight and avoid the high ground they impacted. The attitude of the aircraft at impact suggested an evasion manoeuvre was attempted - but all too late.