Shares in Tullow Oil leapt after it was revealed that the Wisting Central exploration well had made the first ever oil discovery in the Hoop-Maud Basin in the Barents Sea offshore Norway.Tullow Oil owns a 20% stake in the licence where the oil was found.Airline group easyJet was continuing to recover after heavy falls on Wednesday following a profit warning from sector peer Ryanair. Improved traffic statistics for easyJet yesterday helped the share price to rebound. Marks & Spencer was also on the rise; this afternoon the group announced it has increased the time it takes to pay non-food suppliers to reduce costs as it tries to revive its ailing clothing business. Freight-on-board suppliers' payment terms were lengthened to 75 days from 60 days and full-service vendors, which transport, store and deliver the goods, will have their payments times extended to seven weeks from five weeks.Meanwhile, financials were down, including Standard Life, Schroders, Prudential and Legal & General.B&Q and Screwfix owner Kingfisher was also in the red early on after Morgan Stanley downgraded the stock ahead of its first-half results due next Wednesday. The US bank cut its rating to 'underweight' but left its 300p target price unchanged. It also downgraded accountancy software group Sage to 'underweight' this morning.FTSE 100 - RisersTullow Oil (TLW) 1,060.00p +2.61%Meggitt (MGGT) 545.50p +2.35%Antofagasta (ANTO) 893.50p +1.42%Sainsbury (J) (SBRY) 393.40p +1.29%Burberry Group (BRBY) 1,582.00p +0.76%Rexam (REX) 502.00p +0.70%easyJet (EZJ) 1,244.00p +0.65%Associated British Foods (ABF) 1,840.00p +0.60%Intertek Group (ITRK) 3,339.00p +0.60%SABMiller (SAB) 3,075.50p +0.49%FTSE 100 - FallersStandard Life (SL.) 333.90p -1.88%Schroders (SDR) 2,377.00p -1.74%Sage Group (SGE) 346.60p -1.56%ITV (ITV) 171.90p -1.55%Legal & General Group (LGEN) 189.40p -1.41%Fresnillo (FRES) 1,263.00p -1.41%Persimmon (PSN) 1,136.00p -1.39%Kingfisher (KGF) 400.20p -1.38%Whitbread (WTB) 3,147.00p -1.19%Travis Perkins (TPK) 1,586.00p -1.18%NR