24 Oct 2014 --- Tesco Chairman Sir Richard Broadbent has announced his plans to leave Tesco, and said he felt the need for a demonstration of accountability by the supermarket’s bosses. His decision came as the firm revealed its pre-tax profits had slumped 92 per cent on the year to £112m in the first six months of its financial year. Sales fell 4.4 per cent to £34bn, with the UK worst affected of all the global units – trading profits in Britain slumped 56 per cent to £499m.