Llandudno's signal box (formally named Llandudno Number 2) is seen from the rear probably taken from this angle due to the sun being wrong for a front view. The box was a L&NWR Type 4 opened in 1891 along with Number 1 signal box that was closed when BR rationalised the tracks around the station in 1970. Notice the Class 47 partially obscured behind the box. Close examination of the image reveals a tiny blob of red on its bodyside suggesting that it could well have been 47090 'Vulcan' waiting to return to Essex as seen earlier in the day at Abergele, see...
https://www.ontheupfast.com/p/21936chg/30035069772/x47090-shoeburyness-1zxx-abergele