This is the second time that I have taken a picture of Bangor's LNWR 1923 signal box. The first time I visited in 1981 I was able to get a lot closer and a frontage shot resulted, see....
https://www.ontheupfast.com/p/21936chg/30035069794/x37-bangor-signal-box-lnw-1923. No chance of this now with all areas around it totally off-limits. This is the remaining box of the two that were situated at either end of the station with this one being formally known as Bangor Number 2. It is built in an interesting position half into the bank behind with the iron frame base sitting atop a substantial brick structure incorporated in the retaining wall.