Miners Fresnillo and Antofagasta were showing resilience despite the mounting tensions seen in both Russia and Gaza over the past few days. Retail giant Tesco was up despite this morning unveiling a profit warning after a "challenging" second quarter. Shares gained after investors welcomed the resignation of its boss Philip Clarke. Clarke agreed "this is the appropriate moment to hand over to a new leader with fresh perspectives and a new profile", the company said, and will be replaced by Unilever exec Dave Lewis. Rivals Morrison and Sainsbury were two of the day's biggest fallers. ITV climbed after Deutsche Bank upped its target price on the broadcaster from 195p to 205p.Engineering support services group Babcock was in demand after saying that the new financial year "has started well", with activity levels remaining high.Meanwhile, housing stocks fell after Rightmove data showed that the average asking price for a UK home dropped 0.8% from £272,275 in June to £270,159 in July. Barratt Developments and Persimmon were both significant fallers. Media giant BSkyB fell as it announced the purchase of a 70% stake in UK production group Love Productions, which makes programmes such as the Great British Bake-Off. BSkyB continues to be dominated by speculation that it will buy the Italian and German pay-TV assets from 21st Century Fox.British American Tobacco (BAT) and Imperial Tobacco dropped after RJ Reynolds was told to pay the widow of a cancer victim $23.6bn in damages amid claims that the company was negligent in informing the public about the dangers of smoking. RJ Reynolds is wholly owned by Reynolds American, which is 42% owned by BAT.FTSE 100 - RisersFresnillo (FRES) 915.00p +1.55%Antofagasta (ANTO) 817.00p +1.43%Tesco (TSCO) 288.35p +1.18%ITV (ITV) 204.70p +1.09%Babcock International Group (BAB) 1,111.00p +1.00%Randgold Resources Ltd. (RRS) 5,115.00p +0.99%AstraZeneca (AZN) 4,382.50p +0.98%BAE Systems (BA.) 420.90p +0.89%Weir Group (WEIR) 2,750.00p +0.66%Marks & Spencer Group (MKS) 438.50p +0.64%FTSE 100 - FallersBarratt Developments (BDEV) 353.20p -2.86%Pearson (PSON) 1,102.00p -2.31%Morrison (Wm) Supermarkets (MRW) 173.90p -2.30%Persimmon (PSN) 1,248.00p -2.12%Meggitt (MGGT) 531.00p -1.94%Sainsbury (J) (SBRY) 318.80p -1.82%TUI Travel (TT.) 366.20p -1.59%Bunzl (BNZL) 1,607.00p -1.59%Petrofac Ltd. (PFC) 1,174.00p -1.51%British Sky Broadcasting Group (BSY) 904.50p -1.42%NR