GBPUSD may be forming a short term cycle top at 1.6467 level on 4-hour chart. Further fall to test 1.6133 would more likely be seen in a couple of days, a breakdown below this level will signal further fall towards 1.5850-1.5900 area. Only rise above 1.6467 will indicate that the short term uptrend from 1.6133 has resumed, then the next target would be at 1.6550 zone.