These are no speed restriction signs on the road and when you turn off into the estate to the west (Thistle Hill Way) the speed goes down to 30 with national speed limit applies on the reverse side indicating that part of Scocles Road is 60 mph.  I came down via Elm Lane which is national speed limit from the corner near Drake Ave so, I assume that limit applies.  I didn't cycle the north end of Scocles Road so don't know if the limit changes somewhere.  I'll check to make sure I've not added a limit I cannot verify.