GBPUSD retreated from the highs ahead of UK GDP data that will come out tomorrow.
Any break below low 1.3810 will open the doors to 1.3760/50 and 1.3700. On the upper side, the first immediate resistance can be found in 1.3880 and then 1.3910.
I can see this pushing higher due to the weakness in DXY
Same thoughts I had too and it has broken the said level.