By Amber Murray High business rates and other bills have led to an overtaxing of the retail industry compared to its size in terms of GDP, according to fresh data. The British Retail Consortium found that retail pays 7.4 per cent of all business taxes – £33bn – a share 1.5 times greater than its share of the overall economy, which is five per cent of GDP. The tax bill is 55 per cent of the industry’s pre-tax profit, the highest proportion of all main business sectors. Business rates make up 11 per cent of this, or 5.75 per cent of pre-tax profit. Helen Dickinson, chief executive of the British…