Say what you like about the Church of England, at least its recently deceased leader, the former queen, stood firm against such such nonsense. She was careful to insist that she be buried in a sealed, lead-lined coffin - and not even underground, but rather in a vault (which is just a fancy name for a basement).
This will not, of course, do her any good as the Church of England is not a True Christian™ church. But at least she will descend into
intact, rather than as some sort of disembodied mush.