Leather and luxury leather goods group Pittards warned that economic uncertainty was "making it difficult to predict future business" but that trading last year had remained robust.The AIM-listed company, which supplies high performance leather for products from handbags and shoes to cricket gloves and pads, confirmed trading for the year ended 31 December 2014 was "broadly in line with expectations".But it added: "Although global economic uncertainty is inevitably making it difficult to predict future business, with recent positive currency moves in the US dollar-sterling exchange rate, we look forward further into 2015 with reasonable confidence."The company is scheduled to release its results the week beginning 23 March.