And shares in Plessey Co Plc were a vibrant market yesterday, ending up fivepence at 156p on a perm-any-three-from-10 rumour mill: ones picked up by the Evening Standard were that a management buyout was planned for the semiconductor business, that the government had reconsidered its veto on a GEC takeover, and that Rothschilds had joined the list of Plessey advisors; we agree with the Standard’s man – don’t believe a word of any of it.