Brexit remains the most important influential factor for GBPUSD chart.
The support rests at 1.27720 with resistance at 1.28050 which both lines are below the weekly pivot point at 1.28730. The EMA of 10 is moving with bearish bias in the descendant channel and it is below the EMA of 100 and the EMA of 200. The RSI is moving below the 50 level, the Stochastic is moving in low ranges and the MACD line is on the signal line in the neutral territory. The ADX is showing buy signal.
The resistance level breakout will smooth the way for further growth towards 1.285, otherwise, GBPUSD will continue its bearish trend towards 1.27.

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