I am going to take a punt that it is looking south, just to south of Winchester (later Chesil) station. The gentle curve of the line and what looks like St Catherine's hill behind makes me think it is here. The siding with carriages would have been alongside the track, the embankment might have been built as double track width if they had surplus of material
The lack of trees and fairly bare embankments suggests quite early in railways life (was opened 1882). Probably 1890s or early 19th century. And the style of clothes (possibly Sunday best) suggests that too.
The line was single south of here (there is a viaduct that remained single, and is still there further south) but out of shot. The other clue is the bridge at Garnier Road isn't visible (which fits in with it being out of shot beyond the buffer stops)
I think it is similar to this google streetview (the foreground is now sports playing fields, and the embankment is now obscured by trees
Explore a place through a 360° photo.
www.google.com
Maybe the sports pitches were constructed and levelled when the Winchester bypass (one of the first dual carriageway bypasses in late 1930s) was squeezed in other side of the railway, would have been lot of chalk soil to move