Fantastic job Wayne. I know how frustrating replicating complex architecture from referance photos can be.( I presume you dont have the technical drawings for Clermont Cathedral). Nice work on the textures and lighting. Prefer the night shots myself. There are a couple of things I would suggest a bit of tweaking might improve.
The front doors are clearly an image plane, having gone to the trouble of modeling all those windows I would go the extra yard and model the doors. The windows are a bit too reflective in the front day shot with the reflection also too consistant. I’m guessing the bishop of Claremont doesnt get his windows cleaned every fortnight. A grunge mask with emphisis around the frames would probably help and something to actually reflect, an hdr or image dedicated to reflections or something. I think the displacement on the spires could be lowered a little, it seems a bit strong,grabs the eye too easy, could be just me. I would also add some decoration to the spires, they do have those things that look like cows tongues on them.
That said, again great work all round.