GBP/USD is at the moment in its downtrend and reached the support level 1.5775, from this level can start the correction movement in case the price goes over the resistance level. Then we could expect the price to go over its resistance at 1.5875. The next resistance is at 1.5950.

More info about FX-trend

Downtrend can be expected to start from the current levels or in case price goes under its support level 1.5759, then the price objective would be the level 1.5675.