Originally Posted by
jrfsp320
The stopping services from Hertford N and WGC go to Moorgate. Thameslink / Great Northern services from Cambridge / Peterb split go through to the tunnel to St Pancras or terminate at Kings X.
Ahh, yes, although that's on the deep-level "Northern City line"[1]. Different to the Great Northern services that used to run into Moorgate via King's Cross Thameslink (later moved to the new Thameslink platforms at St. Pancras) and Farringdon. All those are now part of Thameslink proper, and there are some disused platforms at Moorgate where they used to terminate, alongside the Metropolitan line platforms.
[1] (Fun fact: This line actually used to be part of the London Underground and was served by Northern line trains! It was transferred to British Rail in the 1970s, but the station designs are still very reminiscent of the Underground)