Although Plessey Co and GEC Plc insist that they are still on course for merger of their telecommunications interests to create GEC-Plessey Telecommunications Ltd, Plessey has had to postpone a letter to shareholders giving financial details because some still remain to be agreed: we also hear that Racal Electronics Plc has put its foot down and that the 50-50 Orbitel Ltd digital cellular joint venture company with Plessey will not be going into the merged firm.