This forum is for TSW. Direct your question to the appropriate forum on Steam or simply search within Steam to see if that route is there.
The Train Simulator 20xx forum is at the link below on Steam, as Platchap says above, this is the Train Sim World forum. Same Company different simulator. Dovetail have not created a forum for TS 20xx here at their own website :- Steam Forum Here East Coast Mainline is available on Steam for TS 2018 (and previous versions) :- ECML London-Peterborough Here