Lochaber (mainly) Old Burial Grounds

I have been around quite a number of old burial grounds whilst taking pictures of war graves for the War Grave Photographic Project.  I have often taken some pictures of the other graves there in case they could be useful to someone outside the area researching ancestors.

Not Lochaber, but has anyone any idea about this group of war graves from HMS Glendower in St Cawrdof in Abererch.  They are all of an unusual design and I have wondered whether perhaps Billy Butlin could have paid for them?