Carphone loss widens for Best Buy U.K. joint venture

London -- U.K. mobile phone retailer Carphone Warehouse Group PLC reported Tuesday that its loss for its Best Buy U.K. joint venture widened to $102 million in the year to March 31, compared with a loss of $34 million in the prior year. CEO Roger Taylor has warned analysts to expect further losses of between $82 million and $98 million this year. Carphone announced its joint venture with Best Buy Co. in July 2008, announcing plans to open as many as 200 big boxes across Europe by 2013 under the Best Buy U.K. name. That target has already shrunk