GBPUSD was sold off heavily last week to 1.3130-1.3140 because the Brexit deal major issues are not solved.
GBPUSD was sold off 200-300 pips after bad Brexit news and it has went up 200-300 pips after good news

GBPUSD-Choppy-Brexit-Talk
GBPUSD is expected to trade inside the two gaps ( the supporting gap 1.3220-13250 and to 1.3400-1.3430) to wait for the final Brexit result.
GBPUSD will be sold off to 1.3000-1.3050 if GBPUSD drops bellow the 1.3220-1.3250 gap.
However, GBPUSD will go to 1.3550-1.3600 if GBPUSD can break the 1.3410-1.3430 gap.