What's a bit strange is that they've been running the same trains with passengers on from Liverpool Street through Stratford for more than 2 years, with passengers, as TFL rail. But I guess they had to upgrade the signalling around Stratford to work with the trains coming through the core, and that is still buggy
https://anonw.com/2021/08/12/the-crossrail-tunnel-portal-at-...
From there the train will travel underground to the Liverpool St - Moorgate station.
There’ll still be Elizabeth line trains travelling into Liverpool St station but there’ll be terminating.
Fun fact there’s the large ABBA venue going up at Pudding Mill Lane.
https://www.ourbow.com/abbas-virtual-comeback-show/
The things one misses when not commuting.
No one has called it the ABBAtoir yet, but I’m waiting to see who’ll be the first to come up with that name.
I think you mean Pudding Mill Lane?
Pudding Lane was where the Great Fire of London started.
This means that the boundary between the mainline signalling and the new CBTC signalling in the core is at Stratford. But this only applies to trains taking the new route; services on the existing GEML/Shenfield Electric lines continue to use mainline AWS/TPWS signalling, which is why there hasn’t been any impact on services to date.
it was originally buried so that it could connect up with the Metropolitan Railway (today's metropolitian line on the London Underground)
this was so that in 1875 the Met could use the mainline railway station as terminus (whilst their own was under construction)
Trains from Stratford will still be terminating at the same high-level platforms at Liverpool Street. Through running into the core tunnels (and thus a signalling system change) will come later.