Hello Joyce, and thank you Stewart for the fore-warning!
Well, Joyce, get out your machete, and if you're wise, call Ray Mears

, it could be a bumpy ride

The area where your mother-in-law was buried is now a brambly wood

Nunhead cemetery is the second biggest cemetery in London, and unfortunately was abandoned by its owners after years of neglect some time in the 60s or 70s. Although Southwark council bought it (for £1), and parts of it are still used for new burials, a large area of it is now a nature reserve, and the Friends of Nunhead Cemetery (FoNC) have a policy of conservation not restoration (I can't imagine the cost of major restoration, the site is 52 acres.....).
Well, Rizla (my dog) and I had a lovely walk around, and did manage to get some way through the undergrowth, but he is a Westie, ie little, he couldn't manage some of the bits on his own, and I couldn't manage whilst carrying him to get any further, so....
We're going back with the children and some friends this weekend - hooray!!!

It may be possible to get to the grave along the cemetery wall, even though the trees and undergrowth are right up against it in many parts. We did walk up the Brockley Way which runs up the other side of the wall, but it runs uphill and the wall is quite high in places, so no luck that way.
Wish us luck for this weekend; I was so engrossed I forgot to use the camera, doh, but we went in the morning and the weather held out, didn't rain until the afternoon.
Kind regards
Gaie (honorary Mears)