Below is the technical chart of GBPUSD with Doda-Donchian indicator.
Whatever signal given by Doda-Donchian, Doda-Bollinger bands or any other indicator, do not take any long position in this currency pair. The reason is that it is trading near high resistance zone and chances are, you'll regret. The resistance zone is from 1.57220 to 1.5757. Take long position if it closes above these values. Below these figures, one can take short selling calls, as when signal given by Doda-Donchian.