We’ve been down as far as 1.5075 from 1.5250 since the news of the downgrade was released in NY trade, on reaction to news which was already 100% written into the market!
Is that a good reason to buy GBP? I’m not 100% convinced as when it starts falling it does tend to continue but if you feel bullish, buying here at 1.5100 with a stop below supposed barriers at 1.5050 and a target at 1.5250 does make excellent risk-reward sense.