By Amber Murray The John Lewis Partnership has reported an improved set of half-year results and has said it is on target to significantly boost its performance for the full year. The iconic UK name, which also owns Waitrose, said sales topped £5.9bn in the 26 weeks ended 27 July, up by two per cent year on year. Its loss before tax halved from £59m to £30m, while total revenue reached £5.2bn, up by two per cent year on year. John Lewis typically generates a significantly higher proportion of its profit in the second half of the year, particularly over the Christmas ‘golden quarter’. Waitrose …