I just discovered that I have a relation buried in this cemetery - I came across an In Rememberance document from the funeral when I was visiting relations last Tuesday.
I have since also found that you can obtain photographs of the graves online if you wish, and a donation of 3 GBP is suggested to help "The War Graves Photographic Project" - Paypal accepted.
A low resolution image of your Great Grandfather's grave marker can be found here -
http://twgpp.org/information.php?id=1705938I will probably visit the cemetery tomorrow and will take a photo of your Great Grandfather's grave marker incase you do not yet have one (it is only a few metres from the one I am visiting, so it is no hardship!)
Regards,
Tony