As shown on the chart, the GBPUSD its currently following a downtrend on the 4H chart, making 50% Fibonacci retracements along the way. These 50% Fibonacci retracements could be used for short entries on the 4H timeframe. Heavy pessimism about the UK/EU brexit deal its haunting the GBP and the EUR. With this fundamental information and the information provided by the charts we can predict a continuation of the downward pressure back to daily support around the 1.27 figure and possibly lower.
Trade safe with proper risk management. Good luck.