The frets spilled over into financial markets where pub operators were at the sharp end of the slump. Mitchells & Butlers, behind All Bar One and Toby Carvery, fell over 11%, or 16.49p, to 124.11p. Marston’s was 13.3% lower, or 6.19p, at 40.37p, and shares in JD Wetherspoon lost 76p to 775p.