Stone carving and lettering

Yesterday was an open day at Histon Road Cemetery, and Harry Gray and family were demonstrating stone-carving. I got a chance to carve out some letters - rather badly, but it was extremely enjoyable. He recommended I seek out a course in this sort of thing. I notice that on 23-25 September there's a workshop on "drawn lettering & lettercarving in stone with Tom Perkins & Eric Marland, in Cambridge" (though the dates on this page differ slightly). Fairly expensive but might be worth a go.