GBP/USD broke rising trend support having recoiled from resistance near the 1.40 figure, hinting that the broader down move emanating from the Double Top in the 1.4210-51 zone is resuming. Confirmation on a close below 1.3879 looks likely to expose a dense support bloc in the 1.3730-1.3800 region. Reclaiming a foothold above 1.40 looks like a pre-requisite for neutralizing selling pressure.