Sainsbury led the downside after Kantar Worldpanel revealed the supermarket had endured a sales decline of 2.2% and a slight fall in market share from 16.5% to 16.4% year-on-year. Tesco was also very much in the red after the group, which is Britain's largest supermarket, saw its market share fall 4% year-on-year, from 30.2% to 28.8% in the 12 weeks ended 17 August. The data also indicated that sales at Morrisons rose 2.4% in the period - the first signs of growth since it initiated a major price-cutting strategy, prompting the group's share price to rise. United Utilities fell after both RBC Capital Markets and Bank of America downgraded the stock. Petrofac, the oil and gas explorer was recovering one day after it said revenues had declined to $2.5bn over the six months ended on 30 June. Operating profits on an EBITDA basis were off by 16% to $340m. Associated British Foods was also higher as it extended the prior day's gains. FTSE 100 - RisersPetrofac Ltd. (PFC) 1,149.00p +2.32%Morrison (Wm) Supermarkets (MRW) 184.80p +1.65%Fresnillo (FRES) 924.50p +1.32%International Consolidated Airlines Group SA (CDI) (IAG) 362.70p +1.28%Associated British Foods (ABF) 2,903.00p +1.11%Glencore (GLEN) 367.30p +1.11%Rolls-Royce Holdings (RR.) 1,036.00p +0.97%easyJet (EZJ) 1,367.00p +0.96%Mondi (MNDI) 1,037.00p +0.88%London Stock Exchange Group (LSE) 2,054.00p +0.88%FTSE 100 - FallersSainsbury (J) (SBRY) 305.50p -2.18%Friends Life Group Limited (FLG) 304.00p -1.84%CRH (CRH) 1,396.00p -1.69%Kingfisher (KGF) 304.40p -1.42%United Utilities Group (UU.) 896.00p -1.32%Aggreko (AGK) 1,710.00p -1.16%St James's Place (STJ) 731.50p -1.15%Tesco (TSCO) 249.20p -1.15%Anglo American (AAL) 1,559.50p -1.11%Rio Tinto (RIO) 3,321.50p -1.07%NR