Apple suppliers boosted by iPhones The iPhone 5C and 5S are also "highly likely" to incorporate graphics intellectual property from ARM rival Imagination Technologies, Mr Dunn said. Imagination finished up 4, or 1.3pc, at 306p, after earlier rising as much as 5pc. After advancing 53.25 points a day earlier as worries over a US strike on the Syrian regime eased, the FTSE 100 drifted lower for much of the session and closed up just 4.44 points at 6,588.43. The mid-cap FTSE 250 put in a fairly muted performance and slipped 24.95 points to 15,245.78. B&Q owner Kingfisher was one of the heaviest blue-chip fallers and lost 11½ to 408½p after posting a 1.6pc dip in first-half adjusted pre-tax profits to £365m. The experts at Oriel Securities suggested that "the lack of news on a share buyback may reflect a lack of management confidence," which would in turn weigh on the shares. Lloyds Banking Group also slid 2.01 to 75.99p, a move that Investec analyst Ian Gordon said suggested some investors were positioning for aplacing of part of the Government's stake. Indeed, there were rumours circulating in dealing rooms that Lloyds shares could be placed with institutional investors as soon as the market closed today, or tomorrow. Towards the other end of the benchmark index, an analyst upgrade lifted Africa-focused explorer Tullow Oil 16p to £10.73. Al Santon at RBC Capital Markets raised his target price to £13.75, from £12.50, to account for a resources estimate upgrade last week at Africa Oil, Tullow's partner in Ethiopia and Kenya. British American Tobacco edged up 9p to £33.29 after impressing the analyst community at its investor seminar a day earlier. Among those who found the meeting encouraging was Citigroup analyst Adam Spielman, who said he "came away reassured that the company will continue to post steady earnings before interest and taxes and earnings-per-share growth, both in organic and sterling terms." Similarily, Wolseley, the heating and plumbing products supplier, received the backing of analysts at both HSBC and Citigroup and added 2p to £33.80. HSBC's Rajesh Kumar lifted his rating on the group to "overweight," arguing that market consensus for Wolseley's US growth was incorrectly focused on a recovery in the American housing market, when the company in fact has a more diverse business in the country. In the FTSE 250, equipment hire company Ashtead declined 21½ to 648½p after US peer United Rentals fell heavily across the pond. The American company was unsettled by downbeat comments from management at an investor conference. Lower down the scale, Sierra Leone-focused iron ore group African Minerals, was also on the back-foot and plunged 14.6pc, a fall of 28½ to four year low of 167p, after scrapping its expansion plans. There was takeover excitement among the small-cappers, with engineering company 600 Group climbing 1¼, or 7.9pc, to 17p on confirmation it had been approached by China's Qingdao D&D Investment. Speedy Hire attracted vague bid speculation after the shares rose 2¾ in heavy trading volume to 65½p, its highest since May 2009. Cooler heads suggested that hopes the equipment and tool rental group stood to benefit from a recovery in the construction industry were driving demand for the shares. Meanwhile, a "highly successful" oil flow test carried out on Ithaca Energy's Stella field development well in the North Sea pushed shares in the explorer up 18¼ to 144¾p amid strong retail interest. Elsewhere among the minnows, Oxford BioMedica, which develops gene-based therapies, surged 0.35, or 16.7pc, to 2.45p after a consortium it leads won £7.7m of Government funding. The vast majority of the money - £7.1m - was awarded to Oxford BioMedica. Finally, FTSE Group disclosed the results of its index review, which is carried out quarterly. As expected, Sports Direct, paper and packaging group Mondi and Greek bottling company Coca-Cola HBC will all enter the index at the expense of outsourcer Serco, miner Eurasian Natural Resources Corporation and Wood Group, the oil services business, which will fall into the FTSE 250. Beleaguered coal group Bumi, software company Anite and oil explorer Salamander Energy are among those relegated from the mid-cap index. The changes come into effect on September 23.