STERLING TUMBLES TO 31-YEAR LOW, OIL TICKS UP
Sterling slumped to a 31-year low versus the U.S. dollar on Tuesday as concerns over Britain's separation from the European Union were compounded by the renewed strength of the greenback on a recent string of better-than-expected economic data.Despite the dollar strength, both Brent and U.S. crude added slightly to recent gains that have come on bets that OPEC and non-OPEC oil producers could reach an agreement on limiting production.