Dorrington was another location where the signalman permitted Graham and me trackside access to take a reasonable photograph of the box. This was a lot more than Andy and I could manage when we visited in 2016, see....
https://www.ontheupfast.com/p/21936chg/25752985404/dorrington-signal-box This was the final example of the LNW & GW joint box of our trip with his lovely example again dating from 1872.