Inter War Commemorations

[Bombadier]

I have just returned from the Christ Church (Portsmouth) CWGC cemetary. The graves, including two Belgians, are laid out in date order.

Most of the graves have the conventional headstone (apart from some family "specials"). There are, however, a number of inter-war graves, all of which have a plain white wooden cross with an engraved plaque. The plaques appear to be engraved on white plastic, with a black inner layer showing through.(replacements?).

All post WWII graves have the conventional headstone.

Is the use of crosses a common practice or a local one?

Nigel