Gulf Keystone climbs on oil discovery After Wednesday's aggressive sell-off, which saw European markets dragged down by a heavy falls in the US, a sense of cautious calm descended in London for most of the session. Reports that the decision by European finance ministers on the next tranche of Greek aid may be delayed until later in the month weighed on sentiment late in the day and the FTSE 100 closed 15.58 points lower at 5,776.05. The mid-cap FTSE 250 fell 65.66 points to 11,895.66. In the US, the Dow Jones Industrial Average was down about 35 points by the time trading in London finished, after dropping more than 300 points a day earlier in a move that spooked investors in Europe. Mining group Eurasian Natural Resources Corporation gave up 10.4 to 294.6p, the heaviest blue-chip faller, after reporting that nine-month revenues "deteriorated sharply" compared with the same period last year, hurt by lower prices. Security group G4S, which saw its reputation tarnished earlier this year by the Olympics debacle, was a heavy faller after losing out on UK prison contracts. The shares fell 8.4 to 259.2p. Supermarket group Wm Morrison was also under pressure as sales continued to decline, and the shares dipped 4 to 263½p. Burberry was helped higher by forecast-beating results from Hermes in France. Burberry shares rose 15p to £12.14, recovering some of the 53p they lost on Wednesday when the company reported first-half results. On the mid-cap index, a profit warning from construction group Balfour Beatty saw the shares tumble an eye-watering 55.9 - or 18.3pc - to 250.1p. The group cautioned the market that construction will remain tough next year too. That dragged on other companies in the sector, with Carillion down 13.3 to 296.7p and Kier Group off 27p at £12.05. Investors continued to send defence equipment company Chemring lower after US private equity group Carlyle pulled out of bid talks on Wednesday. The shares fell 15.2 to 242.8p, following a 12.9p decline a day earlier. Chemicals-maker Yule Catto sparked a reaction in its shares by reporting that European and North American profits remain "well ahead" of last year. The shares gained 10.8 to 165.6p. That also helped fellow chemicals group Croda International on the FTSE 100, which advanced 29p to £22.10. Elsewhere on the FTSE 250, fashion retailer SuperGroup climbed 30½ to 690p on the back of a 20.3pc jump in second-quarter sales. A spate of profit warnings shook investor confidence in the company and saw the shares tumble to a record low of 264½p in June. The company has staged a recovery, however, and Canaccord Genuity analyst Wayne Brown said that "sentiment is gradually re-building." Half-year results from drugmaker BTG, 24.8 better at 352.4p, beat market expectations and were bolstered by demand for its snake anti-venom, CroFab. The company reported a 44pc jump in pre-tax profits, with revenues from its speciality pharmaceuticals business weighted to the first-half because March to October sees the most snake bites. A move to "neutral" from "sell" at UBS on valuation grounds helped Imagination Technologies advance 2.2 to 481.2p. However, the broker was sceptical about the impact of the company's $60m ($37.6m) purchase of MIPS Technologies" operating business, revealed earlier this week. UBS said "the acquisition does help Imagination scale up in a new area, but we believe it will be hard to compete against ARM." Among the smaller companies, Speedy Hire rose 1¼ to 34¼p, the highest level since May 2010, in heavy volume. The move in the equipment hire group's shares comes ahead of its half-year results on Wednesday and the company last updated the market in mid-October, when it said it was confident of meeting full-year expectations. The volume and share price rise also prompted vague takeover speculation from some traders. Craneware, which provides billing software for US hospitals and held its annual general meeting today, jumped 33.875 to 459.875p after reporting a strong pipeline and confirming it was confident of "achieving a successful year." Finally, DP Poland, which has the rights to the Domino's Pizza franchise in the eastern European country, unveiled a placing of 70,000,000 shares at 15p apiece. The shares were conditionally placed by broker Peel Hunt. DP Poland ended unchanged