GBPUSD has promptly gone up above 1.23 area after FED rate hikes 25 basis point, signaling that the interest rate hike cycle is coming to an end. Therefore, the USD is weaker than GBP immediately. However, the selling pressure around 1.23 area has occured and pushed this currency pair to below this threshold. This rejection indicates that this pair can be corrected to retest the support area around 1.22.