A GBP/USD retracement could see price retest the support zone, which could be a bouncing spot for an upside as well. The bullish view is invalidated if price is able to break below all of the support zones. In that case a larger bearish correction is taking place.
The GBP/USD most likely completed a wave 4 (green) at the 38.2% Fibonacci retracement level. This is way for the moment the GBP/USD is either expecting a bullish breakout as part of wave 5 (green) of wave C (blue) or a bearish retracement to test the support zone again.