GBPUSD breaks below the rising trend line from 1.5124 to 1.5551 and is facing 1.5820 key support, below this level will indicate that the uptrend from 1.5124 has completed at 1.5997 already, then deeper decline could be seen to 1.5600-1.5700 area. Resistance is at 1.5997, only rise above this level could trigger another rise to 1.6200 zone.