Interesting debate.
I didn't realise it was an offence to remove the moss and lichen.
I went a couplde of years to a large churchyard, in a city in the midlands, to look for the graves of my husband's ancestors.
I managed to find three together, but they were overgrown with moss. I talked to the verger who was at the church and he was delighted I had taken the trouble to try to find the graves and went to get me a sweeping brush - he said they felt that it was important to help families locate their loved ones, and ancestors. I did ask for permission to remove the moss, and nothing was said about it being an offence.
The sweeping brush didn't really do much, so I did carefully use the edge of my shoe, and an old matalan card which I had with me.
The card was brilliant - left no mark at all - it just glided, and sliced off the moss. I would never had used any chemicals or anything, only water.
(Be careful, though - I had problems with my eyes that summer, which the doctor thought was hay fever, but it carried on - I wonder now if it was the spores from the moss - wear goggles!)
If it had looked as if it was doing any damage I would have stopped straight away.
It was wonderful to find these graves, and led me onto further research, and as I know this particular family were very proud of their family line, etc I personally feel they would have been really pleased I found them!
I do understand that no-one wants an old churchyard ruined and made to look modern - too trim and proper, but surely there is a balance!
Sorry, if I'm opening up the argument again, but where is balance these days!
I must go back and see what the grave is like now - it still fitted in with the general feel of the graveyard.
After reading this thread now I'm not sure I would do it again, but I feel really sad that I might not be re-united in special way to those people I have very much got to know personally through hours of research and study.
Paulene

Sorry, Kath.