This is a National Trust Property in Oxfordshire, formally owned by Sir William Morris (of Morris Cars, later Lord Nuffield). The house was originally built in 1914, with Lord Nuffield acquiring it in 1933, just after being made a peer, taking his title from the nearby village. Lord Nuffield subsequently made alterations to the property, resulting in what is seen today.
I have made one visit to this property. The collection is ordered on a location basis, using reference numbers from the guidebook.