GBP/USD has tested the resistance at 1.5437 (27/05/2015 high) and is now bouncing on the hourly support at 1.5171 (01/06/2015). Stronger support is given by the declining channel at around 1.5089 (05/05/2015 low).
In the longer term, the technical structure looks like a recovery bottom whose maximum upside potential is given by the strong resistance at 1.6189 (Fibo 61% entrancement).