In the bigger picture, we're still favoring the bearish case that medium term rebound from 1.3503, which is is treated as a correction to down trend from 2.1161, has completed at 1.7043. Focus now turns to 1.5706 cluster support (38.2% retracement of 1.3503 to 1.7043 at 1.5691) for confirmation. Break there will argue that whole down trend form 2.1161 is likely resuming for a new low below 1.3503. On the upside, however, break of 1.7043 will indicate that rise from 1.3503 is still in progress to resistance zone of 1.7332/8236 (50% and 61.8% retracement of 2.1161 to 1.3503) before completion.
In the longer term picture, the corrective nature of the multi-decade advance from 1.0463 (85 low) to 2.1161 as well as the impulsive nature of the fall from there suggests that GBP/USD is now in an early stage of a long term down trend. Rebound from 1.3503, which is treated as correction in the larger down trend, should be limited by resistance zone of 1.7332/8236 and bring down trend resumption towards 1.4063 low. We'll hold on to the bearish view as long as 1.8236 fibonacci level holds.