GBP/USD is under pressure but the bulls could be on the verge of making a move which would be anticipated to be a significant correction in the days ahead.
The following illustrates the market structure and prospects of a reversion along the Fibonacci retracement scale.

The M-formation is a bullish reversion pattern with a high completion rate whereby the price would be expected to revert to the neckline of the pattern. However, in this case, the pattern is overextended:

In this scenario, the 38.2% Fibonacci could well be a more achievable target given the strength of the sell-off.