Many kind thanks for all of the help and efforts, very very much appreciated.
This search very much reminds me of a search I had to identify a house a few years ago. The family album had belonged to the Parsons family of Hastings (the newspaper publishers). However, there was a mystery photo of a elegant looking Victorian villa type property. It was ruled out as being a Parsons home, so for a long time it was assumed to be some random house that they had visited.
Fast forward in time and I took another look in the album. I noticed that the same property featured in photos of an elderly couple. The elderly couple were a mystery, until after many hours of searching I found mention of a photo featured in a local newspaper of my 3x great grandparents golden wedding anniversary. I contacted Hastings library who kindly located a copy of the photo and suddenly this mystery was solved. The property was there home Hole Farm. As far as I am aware, this property no longer exists and I have not seen any other photographs of it.
So I am starting to think that the unidentified country house is perhaps a similar story. Maybe it was one of many country houses that were destroyed in the 1910s-1960s era? There must be a large number of such houses that have entirely vanished from living memory and photographic memory. But the clues are the crest, a potential building date of 1849 and initials F.C.(P?) , and a connection to thatched roof house in the Rye area called Woodcote.
The potential Hastings area connection is very interesting. As already mentioned, I am descended from the Parsons family. Very interestingly, in the album that I have from the Parsons family (covering 1890s-1930s), there are numerous beach trip photographs and also trips to the Isle of Wight. The albums contents are very similar.
So common sense might dictate that this album is from the Parsons family of that era. However, this is where problems come up with this potential connection. I can find nobody in the Parsons family from that era who resided in a country house. Also nobody in this album appears to be in the Parsons family album.
I am sure if/when this house is identified I shall be kicking myself like with Hole Farm