Many thanks all. That gives me a clearer picture. Up shot being that I have learnt that the driver of the 1-24 (or whatever time is was) on 20th September 1910, one George Abbot, brought his train to a stand having noticed a body lying on the track, already deceased. One of my G-Great Grandfather's, who was a one time engine driver in one of the Waterworks somewhere in the vicinity of Wickford, exact location of same I have yet to pin down, hence my interest overall - is noted in a local paper as having witnessed a chap standing by a platelayers hut looking in the direction of an approaching train coming from Southminster sometime earlier. Absence of anything further being mentioned about what my relative saw, suggests after having noticed said chap, he likely looked away and got on with his work. Some while later - George Abbot and the 1-24 came across the situation. My mind is saying it is likely the previous train may have been involved perhaps?
A very sad event, as the (elderly) chap concerned was an inmate of Chelmsford Workhouse, and was on a few days visit to see his sister.