London copper prices slid for a second session on Friday with concerns over global economic growth and U.S.-China trade tensions weighing on the market. * Three-month copper on the London Metal Exchange gave up 0.4 percent to $6,219.50 a tonne by 0203 GMT. * Weak data in recent weeks in key global economies, including in top metals consumer China, has stoked fears of a recession. * Industrial output in Europe’s biggest economy, Germany, registered an unexpected fourth consecutive monthly decline in December, data showed on Thursday, while the Bank of England said Britain faces its weakest economic growth in a decade. ... (full story)