Not so much a modernisation more a change of usage much later on, the clock and gable being the giveaway I think. From illustrations in a long out of print book that has sections on Estate Buildings, I am sure this place is shown complete with original roofing and in use in its original role as an estate office cum manager's habitation. Many of these estate clocks - there for the benefit of the workers - struck the hours and halves by means of an external bell.Neither the illustrations in my book nor Mockingbird's telling photographs indicate that there was an external bell here. Obviously the title of the book will remain anonymous for all the right reasons as I am pretty sure the illustrations therein are of Mockingbird's striking find.
I don't recall seeing a bell either.
This was up in one of the out buildings. Any help?