GBP/USD struggles to build on the overnight modest bounce from the weekly low and oscillates in a narrow band near 1.3500 in European trading on Friday. The Gorton and Denton by-election, held on February 26, has become a focal point of political drama in the UK, along with the Bank of England (BoE) easing expectations, acts as a headwind for the British Pound and the GBP/USD pair.