GBPUSD’s uptrend from 1.5124 extends to as high as 1.5639 level. Further rise is still possible later today and next target would be at 1.5800 area. Key support is at 1.5440, as long as this level holds, uptrend will continue. On the other side, below 1.5440 will indicate that a cycle top has been formed on 4-hour chart, then the pair will find support at 1.5300 area.