For the previous two weeks the GBP has been an outstanding performer against USD. Currently at time of writing the pair is at 1.5174. According to my assessment this would be a very good time for traders to start entering GBP shorts. With the British election coming next month and institutions shorting the cable at 1.5200, I expect this rally to fade away this week and expect the pound to end at a rate below 1.5000.
Best of luck trading.