Can someone please tell me what tracks are the ones running parallel n the SEHS between Stratford intl and ebbsfleet intl.
You mean the portion with the fences on both sides? I believe it's the Tilbury Loop Line. EDIT to add source: https://www.openrailwaymap.org/?style=standard&lat=51.517115369908836&lon=0.1905655860900879&zoom=15