I went in this morning and I'm not sure if I'd just not seen it before, but there are now two more broken gravestones at either side of the path as you enter the graveyard. The litter from yesterday has been added to, so it's clear it's not been checked by the department responsible for litter picking in the area.
I've created a flickr group for the cemetery. Please add any pictures you have new or old to the group.
I've started research on setting up a charitable friends of trust. The police have been notified, but it is the responsibility of the owners, TDC, to report any damage.