"But it's now worth about 50c having visited the bottom of my bath tub."
Paul, you, you, you....idjut!! And the bathtub probably had water in it too when you were taking a bath, right? You English--you're incorrigable. Don't bother answering whether the tub had water in it when you were bathing--I know you're probably not quite that eccentric yet. But henceforth, since you're apparently so prone to "dropsy" take your baths without water or do as we do over here and take showers. If you take Colt's book into the shower with you I don't know what to say!!