This week I have mostly been thinking about decapitations. It started as a casual conversation with someone who will remain anonymous but who can confirm that she knows the person who knows the whereabouts of Oliver Cromwell's head. For those of you who don't know, having rested peacefully in Westminster Abbey, he was dug up and posthumously executed after the restoration of the English Monarchy. The corpse was exhumed and then hanged, and later his head was placed on a spike