The attached might help to understand the migration of signal boxes to NX operationMickey wrote: ↑Thu Jun 23, 2022 10:56 am A number of box closing dates from memory although these box closing dates can be found elsewhere on line.
1967
1. Copenhagen Junction
2. Ferme Park South Up (This box may have closed in 1966 but I recall seeing it standing redundant circa June/July 1967)
1968
1. Belle Isle Up
2. Stevenage South
1969
1. Hatfield no.3
2. Ferme Park South Down
1970
1. Holloway North Up
2. Finsbury Park no.7
3. Oakleigh Park
4. New Barnet South Box
1971
Kings Cross 1932 box
1972
1. Marshmoor
1973
1. Harringay (passenger)
2. Hornsey no.2
3. New Southgate
4. Cemetery
5. Hatfield no.1
6. Welwyn North
7.Woolmer Green
8. Knebworth
1974
1. Finsbury Park no.1
2. Ashburton Grove
3. Finsbury Park no.3
4. Finsbury Park no.4
5. Finsbury Park no.5
6. Hornsey no.1
1975
1. Goods And Mineral Junction
2. Holloway South Up (I think?)
3. Finsbury Park no.6
4. Ferme Park North Down
5. Potters Bar
6. Hatfield no.2
7. Hitchin Yard (I think?)
8. Hitchin South (I think?)
1976
1. Holloway South Down
2. Holloway North Down
3. New Barnet North Box
4. Welwyn Garden City
I can't exactly remember when the following boxes closed
1. Finsbury Park no.2 maybe in 1975?
2. Harringay Up Goods maybe in 1975?
3. Harringay Up Goods either in 1975 or 1976?
4. Wood Green no.1 either in 1974 or 1975?
5. Wood Green Up Box no.4 maybe in 1975?.
6. Wood Green Up Box no.2 maybe in 1974?
7. Stevenage North maybe in 1974?
8. Langley (Junction) maybe in 1975?
9. Cambridge Junction maybe 1976?
S&T