GBPUSD has retraced only at the 38.2% fibonacci ahead of the upcoming 530pm (Singapore time) on average earnings release.
The gap down coming from previous 1.5350 is indicative that this retracement is merely a chance to short GBP in favor of the dollar which has still room to run.
Stoploss place at 1.5250 Preferred entry - 1.5200 (on any data related spike) Take profit - 1.5050/1.5026 or recent low.