The UK government has asked Indian conglomerate Tatas to accept a revised proposal to guarantee hundreds of millions of pounds of short-term funding for luxury brands Jaguar Land Rover or risk the plan being taken off, says a media report. UK Business Secretary Lord Mandelson has warned Tatas — the owner of Jaguar Land Rover — to accept a revised proposal to guarantee hundreds of millions of pounds in short-term funding or risk seeing it taken off the table for good , the Telegraph has reported.