The release of the Lockerbie bomber was linked to trade deals between Britain and Libya, Col Muammar Gaddafis son, claimed last night.Saif al Islam Gaddafi said that Abdelbaset Ali Mohmed al Megrahis return was a victory for all Libyans. He made the claims in a television interview for Libyan television recorded as he accompanied Megrahi on the flight back from Scotland to Libya on Thursday.