Thanks, as I used the RAF Sealand Station to get to work in Chester as a teenager in1965 I found this interesting. It was nice to see the photo of the station.
What looks like narrow gauge is actually the aircraft crossing barriers . They are marked on the 1942 map. They were set on paired rails 0.5m apart. The curved endings are original and not modern day damage. Just behind the fence was a covered culvert. It was opened up in 2019.
Really interesting, as I know this area from work. As an aside - trees growing on the old track bed nearly all silver birch! First to be seen on all unused sidings, eg Crewe south yard
If you want a living witness to this,there is a chap who is 83 and lived in the house next to the signal box, he knew every inch of ground in that triangle, his father was the then pro at Chester golf club just before it closed for the war effort, his father was killed, a RAF bomber crew, I can put you in touch with him?,a retired railway worker he has maps and old pictures.