Madam, – Why is there this need to change the GPO into something that it is not (Opinion, October 15th)? It is not a museum or a theatre: it is a wonderfully functioning civic building, suffused with our history. Every time I go there I am thrown back to those dramatic events. I am, by the way, an actor, neither famous nor even familiar, but I would judge it a tragic day if the GPO was turned into anything other than what it is. – Yours, etc,