Signalling on the Fen Line

[Aictos]

Can anyone familiar with the controlling signal boxes please enlighten me as to what signal boxes control what area on the line between Royston and Kings Lynn please?

I'm currently spending a day at Kings Lynn next week to be passed out at that station and as it's not a regular area I travel on nor work, I would appreciate some background research on the signalling.

According to my quail diagrams, there are signalboxes at Cambridge, Littleport, Downham Market, Watlington and Kings Lynn but who controls what?

 

[Tomnick]

Kings Cross controls the Royston area, fringing to Cambridge not far north of there. Cambridge then controls to Ely North Jcn. (incl), fringing to Littleport.

Littleport, Downham Market and Magdalen Road each control only the single line junctions and adjacent level crossings (as well as supervising any level crossings mid-section - not sure if at least one has a CCTV crossing too?). Kings Lynn Junction has a little more to control, with a few connections around South Lynn.

I've found some photos confirming that Downham Market to Magdalen Road was still Absolute Block in 1990 - not sure whether that's still the case. Presumably the single line sections from Littleport to Downham Market and Magdalen Road to Kings Lynn are some variant of TCB, and the whole lot south of Littleport is obviously TCB.

 

[GB]

The whole branch is now TCB.

 

[Aictos]

Thanks guys, that's useful especially when I'm only familiar with the Kings Cross and Peterborough PSB signalling areas.