That last picture IS out of sequence, isn't it? - Those curves look remarkably close together..
That was the one in my mind (although I didn't know the name) - have been through it many times, both on the Liverpool Street side and the King's Cross sideIt's a mirror version of Shelford Junction, just south of Cambridge, where the Kings Cross line diverges from the Liverpool Street line, so you have probably been through it Chuggy. There is a footbridge over the junction, so it's a good place to train spot whenever anything special heads into Cambridge from the Capital....
Careful. .........A big shout out for Mizzy, as whilst I've been on my hands and knees clamping, she too has been on her hands and knees cleaning the railhead with the track rubber....