If you're hankering to end it all, I urge you not to do so by jumping onto subway tracks in London. Not if you don't want your battered corpse to end up being stored like rubbish in the janitor's room (they call it the "cleaner's mess room"), that is, where, for the second time, Tube bosses have been accused of stashing dead bodies.
It rather brings to mind Lady Bracknell's famous line in The Importance of Being Earnest. To paraphrase: To stash one dead body in the cleaner's mess room may be regarded as an oversight. To stash two looks like carelessness.