FTSE retreats from record as pound, GKN weigh

By Helen Reid and Julien PonthusLONDON (Reuters) - Britain's major share index ended Friday within touching distance of the previous session's record close, boosted by a late rally in mining stocks but dragged down by gains in the pound and a profit warning from engineering group GKN.The FTSE 100was down 0.28 percent at 7,535.44 points as Britain's pound rose to an 11-day high.Sterling benefited from a dollar weakened by U.S. inflation data and new- found optimism on the outcome of Brexit negoti