Gbp/usd has bounced from these range levels before, these range levels I have pointed out with grey lines are not very clean and perfect obviously but people and investors might see them and respond to them as before anyways
also saw on ¨dailyfx¨ that IG clients (IG is a broker) are now 52% short, which i haven't seen for at least a week, could be another sign gbp/usd is overbought.
(my research should not be considered as trustworthy, do your own before acting on mine)