After posting, I found out Loughborough Junction was historically more exotic than I'd realised (and technically outside the OP's criteria).
Originally there were 7 platforms at Loughborough Junction (3 on the Herne Hill line plus 2 each on the chords towards Brixton and Denmark Hill.
According to the
Disused Stations website, platforms on the Brixton curve closed in 1916 and those on the Cambria spur in 1925 (insufficient room there to extend the platforms at the time of electrification). Anyhow, today there are 2 platforms and the junctions are visible, even if it isn't a 'junction' station.