The GBPUSD is encountering a formidable resistance zone between the levels of 1.26720 to 1.26850. Within this range, there is a convergence of factors including previous swing levels, the 50% Fibonacci retracement level, and an impending trendline break. Conversely, buyers will be looking for a break above this resistance to negate the bearish setup and bolster bullish sentiment towards the 1.28 resistance level.