LONDON (Reuters) -The British pound edged higher against the U.S. dollar on Tuesday but slipped against the euro as the single currency rose off multi-year lows. The pound dropped as low as $1.3083 during early European trade before paring losses and trading higher at $1.3121 by 1519 GMT. Against the euro, sterling was lower by 0.2% at 82.94 pence after reaching its strongest level against the single currency since June 2016 on Monday. With limited domestic drivers, moves in the pound have been driven by the broad risk tone and developments in Ukraine, according to analysts at Scotiabank, who …