Luxury carmaker Jaguar Land Rover (JLR) has reported profit before tax of US $1.381 Billion in the last quarter of 2013, driven by strong demand worldwide and launch of new models, said the company on Monday.JLR, a British brand which is now owned by India’s Tata Motors, attributed the growth to strong demand worldwide and launch of new models.Its profit before tax for the quarter ended December 31, 2013 grew to US $1,381 Million (842 million pounds), more than double of the 404 million pounds in the corresponding quarter in 2012.Profits after tax grew to 619 million pounds in the last quarter of 2013, compared with 296 million pounds in the same period of 2012.