During Business Questions yesterday Alan Duncan teased Harriet Harman about the black pen marks that have started appearing on the Despatch Box since Gordon Brown has been Prime Minister.
Alan Duncan: "May we have a statement on vandalism in this House? Indeed, may we have an inquiry into who has been regularly defacing the Dispatch Box opposite me and in front of the right hon. and learned Lady? It would appear—I can see it from here—that the culprit strikes once a week with a black felt-tipped pen, and detectives have already noted that the gravest occurrence seems to be on a Wednesday each week at around midday? Does the Leader of the House have any inkling of who the culprit might be, and is she prepared to reprimand him in the strongest possible terms?"
Harriet Harman: "That is not a matter for business questions."
James Forsyth at Coffee House was unimpressed with Mr Duncan's "bad taste" intervention: