Hehehe!
Sorry to have to correct you again (that’ll be me off your Christmas card list then!).
What I meant was that the grid ref. for the Tree of Life was actually the one for the Death’s Head stone and vice-versa, not that the individual numbers were mixed up.
The GPS readings I got were-
Tree of Life SE17980 51167
Death’s Head SE17796 51239
Cheers (again)
Chris
:-)