Trend analysis (Fig. 1)
On Monday, following a downward movement from the level of 1.2745 (closing of Friday's daily candle) to the 14.6% retracement level of 1.2696 (dotted red line), GBP/USD will rise towards the 38.2% retracement level of 1.2818 (dotted red line).
Fig. 1 (daily chart)
Comprehensive analysis:
Indicator analysis - downtrend
Fibonacci levels - downtrend
Volumes - downtrend
Candlestick analysis - uptrend
Trend analysis - downtrend
Bollinger bands - downtrend
Weekly chart - downtrend
Conclusion: GBP/USD will decline from the level of 1.2745 (closing of Friday's daily candle) to the 14.6% retracement level of 1.2696 (dotted red line), and then bounce up to the 38.2% retracement level of 1.2818 (dotted red line).
Alternatively, the pair may continue its descent from the level of 1.2745 (closing of Friday's daily candle) to the 85.4% retracement level of 1.2669 (dotted blue line), followed by a rise to the 61.8% retracement level of 1.2879 (dotted blue line)