GBPUSD breaks below the lower border of the rising price channel on 4-hour chart and reaches 1.5777 level only. The following rebound suggests that the uptrend from 1.5059 has resumed. Further rally is expected to 1.6150-1.6200 area. Key support is now at 1.5777, only fall below this level will indicate that the short term uptrend from 1.5059 has completed.